the president of syria says he is open to peace talks a day after world powers agreed to pause in fighting there. plus, cheering crowds greet pope francis in mexico as he begins his six-day visit in that country. and later, donald trump goes on a new offensive against ted cruz. why he is threatening to sue his rival for the republican presidential nomination. from cnn world headquarters in atlanta, welcome to our viewers here in the united states and around the world. i'm george howell. "cnn newsroom" starts right now. and a good day to you. we begin with the security conference in munich.

top diplomats from more than a dozen countries dealing with what's been described as a, quote, bleak global environment. and it's the situation in syria and the european refugee crisis that are overshadowing their talks. the meetings come just days after ministers from the united states, from russia and other nations all announced that they've agreed to a pause in the fighting in syria to take effect in a week. but there are fears that at least two issues will scuttle any lasting peace in that nation. the continued russian airstrikes on aleppo and the insistence by the syrian president, bashar al assad, that he would continue fighting enemies that he deems terrorists. let's get the very latest from munich. our cnn international diplomatic editor, nic robertson, is live for us this hour. nic, good to have you with us. so there's so many issues that are playing out in the world. what is the mood there among leaders in munich? >> reporter: well, there's concern about this peace plan for syria at the moment.

the focus for the concern would be this next week in aleppo. it's very clear to the leaders here that russia and president bashar al assad have a military agenda to achieve in and around aleppo. they feel that they're making progress on that. they've got momentum. and so the international syria support group that met here on thursday that agreed across the board that there should be a cessation of hostilities that should come into place next week. the concern is what happens in and around aleppo this week. now, we've heard already this morning that the french prime minister has asked his russian counterpart, medvedev, to halt russia's bombing. the concern at the moment is that if russia continues an aggressive bombing campaign in a week at the end of which everyone has agreed there's a cessation of hostilities, that will create a mood on the ground among the opposition, among the people of syria that means it will be very hard to restart

peace talks over the next few weeks, which is what the agreement was anticipated to do. so there's a broad concern obviously about the security implications that so many refugees, not just from coming from syria, but a lot from syria, afghanistan and other countries coming into europe about the security implications for that, the security implications for the growth and spread of isis, relations with china and north korea is an issue here. but i have to say, the big talk at the moment between the leaders is concern about getting through this next week in and around the city of aleppo. >> nic, i want to also talk about the continued bombing by russia. we just mentioned at the top of the show that the syrian president says that he is open to peace talks. but that he will continue to focus on groups that he deems to be terrorists. also russia continuing its bombing missions against isis

and the al nusra front which are not mentioned in that cessation of hostilities. so how can peace be achieved if that continues? >> reporter: the idea of the peace initiative is to get the opposition and the government speaking and agree to a new constitution and elections in 18 months' time. isis and al nusra have been designated by the u.n. and by the groups here as the terrorist elements. in the past russia has said that it's targeted in its bombing isis and al nusra, the al qaeda affiliate, and there's been a lot of evidence to suggest on the ground that they've been targeting the moderate opposition as well that fights president bashar al assad but is supported by the united states, by turkey, by saudi arabia, by a lot of other countries. so there's been a very clear delineation now at this meeting in munich at the international syria support group about who

and what the terrorists are. if you will, that gives russia less scope to target those that aren't isis and al nusra. it remains to be seen if they do stick to that new definition, and that's certainly something that there's going to be pressure now on the syrian government to stick to while president bashar al assad says he'll continue to fight terrorists. the terms of the agreement state quite clearly that you can no longer call the opposition, who he's supposed to be talking to, the terrorists now. so that's been a change. it's not clear if the sides are going to stick to that, but that's been a very clear change, and it's also up to the united states and russia together, leading the military task force that's come out again of this munich meeting to determine where isis is, where al qaeda, al nusra front is, and then target them. so both russia has a legitimate reason to be targeting isis and al qaeda. that's an expectation the fight

is going to be taken to them. that the united states and the coalition also are going to be taking the fight to al qaeda and al nusra, that the government would, too, and the opposition that's supported by the west and by the arab allies also will be fighting isis and al qaeda. so the fight is going to be, the hope, focused on isis and al qaeda. the real radical islamists. there are fringes of that, of those groups, and in places who have had alliances with rebel groups. that complicates it. but at a simple level, that's what's supposed to happen. the government and the opposition, this broad opposition, are supposed to sit down and talk, but the fight against isis and al qaeda remains. >> it is a complicated puzzle as these world leaders try to find peace in that region. cnn international diplomatic editor nic robertson live for us at the security conference in munich. nic, thank you. the syrian government forces have made major gains across the

northern part of syria. but, of course, they're getting the help, the backing, of russian air power. cnn has gained unusual access in areas just north of aleppo that have been taken back by assad loyalists. our fred pleitgen is in a town that has endured years of fighting and has this exclusive report. >> reporter: god, syria, bashar and nothing else these villagers chant, in the pro-regime village. the mostly shia town was under rebel siege for more than three years. 14-year-old lived through it and recalls the hardship. "it was very tough," he says. "many people got sick, and the kids were very scared. but after a while, we became numb to the fear." the siege was broken by the recent government offensive north of aleppo. now there is food in the local

markets and clearly a lot of support for the main backers of the assad regime, hezbollah, iran and russia. the people here are keen to show their affection for hezbollah, iran and russia. they believe that throughout the years of siege, it's these groups who stood by them and ensured this town's survival. the u.n. has strongly criticized the denial of aid to besieged areas in syria, accusing government forces, some rebel groups, and isis of using food and medicine as weapons. a new agreement reached by world powers hopes to put an end to these tactics. aleppo's countryside is now one of the main battlegrounds in this brutal five-year civil war. as pro-government forces press an offensive backed by russian air power, tens of thousands have fled towards the turkish border. on our trip, we saw scores of deserted villages, some clearly scarred by fierce fighting.

government soldiers issued a strong warning to opposition fighters. "their families encouraged them to look for reconciliation. otherwise they will be killed. they have no other option." but the opposition believes reconciliation is not on the government's mind. they say they are simply being slaughtered as the syrian military continues to push to try and retake the area north of aleppo in what many feel could be a crushing blow to anti-assad forces. fred pleitgen, cnn, syria. many syrians are still trying to get out of harm's way. tens of thousands of refugees have fled north toward turkey's border with syria. arwa damon has more on their plight and the effort to get aid to syria's hardest-hit cities. >> reporter: despite the agreement of a cessation in hostilities, aid organizations are continuing to try to send in

as much assistance to various areas in the country but especially to aleppo. many of them still fearing and concerned about the fate of the civilians there and the fact that the syrian regime is very close to besieging aleppo. aid organizations like mercy corps say that they are dispatching inasmuch as three months' worth of supplies. meanwhile, tens of thousands of those trying to flee the violence continue to gather on turkey's border. turkey, despite the fact that it maintains that it still has an open-door policy, says that for the time being it is hosting those who have fled this most recent onslaught by syrian fighter jets and regime troops advancing along with their allies inside syria, saying that it is providing the same conditions for them that it would be providing at refugee camps inside turkey. but, of course, the concern is that as these russian fighter jets approach the various cities and towns closer to turkey's borders, as the regime gains

even more territory, these civilians do remain very vulnerable to the violence. and as long as they are in syria, that one thing that they really so desperately crave, that sense of security is denied to them. arwa damon, cnn, turkey. many refugees have to resort to human traffickers to help escape from war zones. a little later in our show, our phil black takes us on a navy ship used in the fight to put a stop to trafficking. he shows us how they train to catch smugglers in action. pope francis, he is in mexico this hour. and, of course, he landed friday night to a rock-star greeting. hundreds of cheers and chants for the first latin american pope. the president met with francis at his plane and will have an official visit in a few hours' time. earlier friday, the pope met with russian patriarch in cuba,

a meeting that was a millennium in the making. this was the first time a pope met with the head of the russian orthodox church since the two faiths split in 1054. pope francis has a full schedule while in mexico. and as typical of his visits, the pope will spend a great deal of time ministering to the poor. shasta darlington has more on what we can expect to see over the coming days. ♪ >> reporter: some surprisingly melodious parishioners gearing up for pope francis's arrival. a six-day trip that starts right here. a basilica of the virgin of guadalupe, the patron saint of mexico. visited by millions of pilgrims each year. who pray before a 16th century shroud that bears her image. according to the chaplain, pope francis seeks guidance at the start of his trip.

"he's looking for her protection," he says. "he's entrusting his whole trip to mexico to the virgin of guadalu guadalupe." pope francis planning to visit some of mexico's poorest and most violent corners. from a sprawling suburb with the highest rate of killings of women to the center of mexico's narco war. pope francis chose this shrine because it's the most revered. but it's interesting, talking to parishioners here, they say of course they want to hear his message of faith, but they're just as interested in having him shine a light on the problems of corruption and crime in mexico. "i would ask him to talk to authorities about the violence," says this woman. "especially the disappearances." this man traveled on foot for five days to reach the shrine. "the pope's going to visit the places where people need him most," he says. "where he needs to motivate them

so they don't lose faith." but here at the basilica, faith runs deep. for these musical nuns flying in from peru, the message is simple. ♪ when the future seems uncertain and fear weakens your faith, believe in god. shasta darlington, cnn, nextco city. mexico city. you are up with aing "cnn newsroom." and still ahead, we have much more on the pope's visit to mexico including a secret that he told our rosa flores on board the papal plane. that is coming up. plus, presidential hopeful jeb bush hasn't been doing very well in the polls, but he's hoping now that a little help from his big brother will help to change that. stay with us. want to survive a crazy busy day? sfx: cell phone chimes start with a positive attitude... and positively radiant skin. aveeno® positively radiant moisturizer...

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this year alone, an estimated 80,000 refugees have landed in europe. the eu military is trying to curb the flow of migrants who are making that dangerous journey by sea into europe. their goal is to target human traffickers. cnn's phil black has been on a war ship off the libyan coast to

find out more about the mission. >> reporter: we've been at sea in the mediterranean with italian and spanish naval forces for five, six days now. this is part of the eu naval operation against people smugglers operating out of libya. we started when we were first transferred to the command ship for this entire operation. it is big. it's pretty new, and it's really very impressive. from there, we came here, the spanish frigate. in pretty big seas, we've been carving through the south. these conditions here have been too big, the swell too rough, the winds too strong for people smuggling boats to put to sea. so in the meantime, the crew of these vessels, they need to train. and so we witnessed the marines aboard the ship conduct a boarding exercise. the marines are the ones responsible for making the approach to the migrant vessels. giving a security assessment, making sure that there is no threat.

during our time at sea, we spent a lot of time clambering in and out of helicopters. aboard the helicopter here, we were able to get very, very close to the libyan border. through the haze, you can see the libyan coastline in the distance. we're 12 nautical miles away at the very edge of libyan territorial waters. this is as close as these forces can get to where the people smuggling operations are based. living aboard a frigate built in the 1980s, the late 1980s, it takes some getting used to, but it's also really good fun. at least for a few days in the way that we're doing it. but you get a real sense of what a challenging environment this would be to live in in the long term. so it is, of course, incredibly narrow. the confined space, we got lost a few times. actually, we're on the wrong deck. the hallways narrow, passing people all the time. buenos diaz.

we were warned that the single most dangerous thing aboard the ship are these narrow, steep ladders and stairs that separate the decks. and this is where they control the ship. and it's a pretty extraordinary view. to get a sense of where this ship has been operating, where we are, what we're waiting for, this is a map of the southern area of the mediterranean. i'm not allowed to show you the coast of libya, but the people who run the operation, they talk about the triangle. if you imagine the coast of libya down here, there is tripoli on the eastern side. to the left heading towards the border with tunisia. it is from here the boats leave and head out north. that's the trianglear shape more towards the center of the map. so today as the ship has been plowing through seas much bigger than what you see here now, this is pretty flat. the winds are pretty gentle by comparison. they've come down a long way.

this, the crew believes, makes it more likely that you're going to see some sort of migrant boat movement. but where we've been positioned for a couple of days now, we've been holding a pattern to the northwest of tripoli probably just to the northwestern side of the libyan coast in international waters, waiting here in a position the crew beliefs is beyond the detection of the people smuggling crews and operators back on the libyan coast itself. >> we will arrive at 15 nautical miles. >> reporter: this is one of the marines stationed aboard a 50-caliber weapon trained on the side. is he looking out and ready for the possibility of some sort of attack from a smaller vessel. what the commanding officer describes as a terrorist attack. now to the race for the white house. u.s. republican candidate donald trump is threatening to sue his rival, ted cruz. trump sent out this tweet earlier, threatening to take cruz to court over whether he's a natural born u.s. citizen.

that is if the texas senator doesn't stop running negative ads against him. trump is questioning cruz's eligibility to become president since he was born in canada. the cruz campaign hit back, saying that trump needs to go to the, quote, time-out chair and think about his choices. fellow republican candidate jeb bush has been struggling in the polls but is now getting a little help from his big brother. that would be the former u.s. president, george w. bush, who will be campaigning for his brother in the state of south carolina this week. cnn's athena jones has this report. >> i know jeb. >> reporter: george w. bush is back. >> experience and judgment count in the oval office. jeb bush is a leader who will keep our country safe. he respects the military. he honors their families. >> reporter: and jeb bush couldn't be happier about it. >> he's the last republican that was president. he is the most popular republican alive. >> i'm a proud brother of george

w. bush. >> reporter: bush, whose campaign logo doesn't even include his famous last name and who began his run stressing he would be, quote, his own man has been embracing his family more with each passing day. >> i'm jeb exclamation point proud to be a bush. >> reporter: his mother, barbara, joining him on the stump in new hampshire. >> have you met barbara bush? >> reporter: the brothers will be campaigning together for the first time monday. until now, w. has been helping out behind the scenes. >> this is the first time that he's really kind of stepped out in the political realm since he was president. i think there will be a lot of interest in what he has to say. >> reporter: it was once the younger bush who was thought to have a head for politics, but his older brother beat him there, winning a governorship first and later the white house. >> i, george walker bush. >> reporter: eight years during which jeb bush has said he never disagreed with his brother on policy. >> not one time do you call up and say, you know what? don't do that? >> i'm not going to start now. till death do us part.

>> reporter: the assist from w. won't come without criticism. >> your brother and his administration gave us barack obama because it was such a disaster those last three months that abraham lincoln couldn't have been elected. >> you know what? as it relates to my brother, there's one thing i know for sure, he kept us safe. >> reporter: donald trump has repeatedly bashed the elder bush's decision to go to war in iraq. >> and i see he's bringing his brother. >> reporter: and the gop front-runner says he'll be ready with some more choice words for the bushes in the coming days. >> now he's bringing in his brother. i won't say anything. i'm going to save that for after his brother makes a statement because there's plenty to say about what happened. >> that was cnn's athena jones reporting for us. meanwhile on the democratic side of the race, the candidates are trying to boost their support going into the next round of primaries, and hillary clinton just picked up endorsements, big endorsements, from newspapers in the states of texas and florida. "the dallas morning news," "the houston chronicle" and "tampa

bay times" praised her record and stances on issues, but they had complaints, too. the florida paper called clinton, quote, an imperfect candidate with political baggage that would sink most other politicians. meanwhile, bernie sanders is under fire for claiming that race relations would be better if he is president than under the current president, barack obama. atlanta's democratic mayor, kassim reed, spoke to our erin burnett and called his comments dmisive and disrespectful. still ahead here on "cnn newsroom," a group of schoolchildren in the united states have messages and questions for pope francis. find out what they had to say and whether their words reached the catholic leader. plus, the zika outbreak continues to cast a shadow over brazil. the government's latest plans to fight the virus. broadcasting from atlanta and live around the world, this hour, you're watching cnn.

a warm welcome back to our viewers here in the united states and around the world. you're watching "cnn newsroom." good to have you with us. i'm george howell. the headlines. a pause in the fighting in syria's civil war is set to begin in a week. top diplomats from the united states, from russia and other nations all announced they've agreed to a cessation of hostilities, but complicating the situation, russia, which backs the syrian government, says it will continue to bomb rebel targets in aleppo. anti-government demonstrators march in bahrain's capital on friday. fifth anniversary of the country's shiite uprising. majority shiite muslims have been demanding more rights from

the sunni monarchy since the arab spring protests that erupted in 2011. if just a few hours' time, pope francis will be visiting with mexico's president at the national palace. the pope arrived friday night to a huge fanfare for a six-day visit there. he is. examined to deliver a message of hope and solidarity. the victims of drug violence, trafficking and discrimination. pope francis also has a tough-love directive for people causing those issues. our rosa flores is traveling with the pope and has this report. >> reporter: pope francis is the pope of mercy and sometimes of tough love. calling the unfettered pursuit of money the dung of the devil, blaming human activity for climate change. >> translator: our house is going to ruin, and that harms everyone. >> reporter: and now that he's visiting mexico, he's expected to arrive with a holy dose of some of that tough love.

one of his targets could be drug traffickers when the pope visits a city in the heart of cartel territory. in mexico, the drug-related death toll, more than 80,000 in the past nine years. in a recent video message to a group of mexicans, the pope encouraged them to fight against corruption, drug trafficking, against organized crime and human trafficking. during the pope's visit to brazil in 2013, he blasted narcos, calling them dealers of death. and some of the pope's tough love could also be pointed at the united states when he speaks about immigration. >> so many of you are also descendants of immigrants. >> reporter: during his speech before the u.s. congress, francis said immigrants should be welcomed. but gop front-runner donald trump vows to build a wall. >> i will build a great, great

wall. >> reporter: and overlooking the existing wall dividing juarez, mexico, and el paso, texas, is where pope francis plans to celebrate mass. >> what the pope will be saying is, like, look. a wall is a symbolic message that people are not welcome. and that's not what our constitution or history says at all. >> reporter: francis is visiting juarez and a suburb of mexico city, both areas where women are being brutally targeted. >> i mean, the number of women who have lost their lives have been abused, disappeared feels like a civil war. >> reporter: and as the war rages on, the pope says he wants to be an instrument of peace in mexico. rosa flores, cnn, rome. >> in fact, this is the second trip that rosa has taken with the pope. on their way to cuba on friday, she had another opportunity to

speak with pope francis on his plane. she gave the pope letters that children from a catholic school in chicago wrote to him. one first grade student wrote, "the pope inspired her to learn many languages." another said he hoped francis would fill hearts with love and stop violence in mexico and the world. pope francis told rosa the letters were beautiful and also let her in on a secret here. he's publishing a children's book. to read more of these letters, you can head to cnn.com. the pope will spend his first full day in mexico saturday. catholic mass he'll celebrate at the basilica of guadalupe. stay tuned for live coverage throughout his visit. you can find it right here on cnn. carnival has come to an end in rio de janeiro, but the battle against the zika virus in brazil has entered a new phase. hundreds of thousands of soldiers are beginning to deploy to help fight the mosquito-borne

disease. cnn's nick paton walsh has this report. >> reporter: as the carnival ends, here comes the parade. a total of 220,000 brazilian troops, that's 50 times more than you see here due saturday to go door to door for a week, making a lot of noise about zika. ♪ in their sights, ignorance and the pools of stagnant water mosquitoes breed in. it's a massive urgent task. so why not earlier? >> first of all, the whole world know you have carnival, okay? not only because that, you have to take a little bit of time to prepare ourselves. the soldiers, before they received lectures about how to proceed, how to behave, when to approach the brazilians' houses or the civilian population, how we have to say to them, so you need a little bit of preparation. >> reporter: now, this massive mobilization isn't going to make a dent, really, in brazil's

stagnant water mosquito problem, but it might get brazilians who still aren't listening to pay attention to the threat of zika, but most importantly, the outside world. the brazilian state is doing everything it can to combat this outbreak. here's one place they're needed most badly but may be least welcome. one of rio's among the less cramped ones, but imagine trying to eradicate all the water pools here. andre is a local activist and not a fan of the police who often come here to pacify all the developers who gentrify. what could they do to help? are they going to be welcome in a place like this? "this aid coming from the military is just for show. it's for those coming to the olympics. it's an artificial action, and that's something the brazilian government does quite often." yet the disease is real and took samuel out of action for six days of aching joints, red eyes

and rashes. his focus now, protecting little otto. "it's really complex, especially for children," he says. "i use a mosquito net to protect him, but mosquitoes constantly breed in this heat. a lot of people leave receptacles out. rain gets in them. the mosquitoes breed, nobody pays attention, and we get sick." drainage ditches like this don't really solve the problem. it only really needs a capful of water to breed. we learn of a young mother living here who had zika when pregnant, and today near her term was rushed to hospital. her family, though, wanting privacy. zika hitting hardest areas where the burden is already enough. nick paton walsh, cnn, rio de janei janeiro. now to europe where greek farmers have flooded athens to

protest a pension reform plan. they say it will lead to tax hikes and increased social security contributions. farmers threw tomatoes at police outside the ministry of agriculture. and clashes broke out between farmers and riot police. the eu and the international monetary fund have demanded that athens reduce pension spending by 1% of gdp this year. next here on "cnn newsroom," investigators dig into a chilling new video that appears to show a sophisticated laptop bomb just moments before it was planted on an airliner. stay with us. want to survive a crazy busy day? sfx: cell phone chimes start with a positive attitude... and positively radiant skin. aveeno® positively radiant moisturizer... with active naturals® soy. aveeno® naturally beautiful results®.

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there is some chilling new surveillance video that appears to show a sophisticated laptop bomb and how it made its way through mogadishu's airport security just before being

planted on board a passenger jet last week. cnn's brian todd has the story. >> reporter: crucial new evidence in a horrifying terror attack. closed-circuit tv footage from the mogadishu airport. on the right side of the screen, two airport employees who are now suspects. one of them's holding what appears to be a laptop computer. just seconds later, one of the men hands the computer to a third man. the computer, a source says, was packed with explosives. >> it's chilling, frankly, to see this because this is, you know, if you and i were in this lounge right now, you'd see these two people, and you'd see them handing off that laptop. you wouldn't think twice of it. >> reporter: the man the laptop bomb was handed to, and what he did with it according to somali sources was try to blow up this somali passenger yet. >> well, at the moment the somalis clearly suspect that he was a willing participant, that he planned to be a suicide bomber, that he positioned himself on the aircraft at a place where he could create the maximum amount of damage.

>> reporter: the bomb ripped a hole in the fuselage. he was killed when he was blown out of the hole. his right hand and right foot are missing. the pilot made an emergency landing. amazingly, no one else was killed in the february 2nd attack. now a source close to the investigation tells cnn correspondent robyn kriel the laptop bomb was sophisticated and got past a fairly advanced x-ray machine at the airport. cnn is told one of those airport employees who are suspects placed the laptop on an x-ray belt before it was handed to the bomber in the departure lounge. >> the capabilities that they would have to get through security by doing a little bit of social engineering, just distracting, or saying, hey, i got this one open up all kinds of sinister possibilities. >> reporter: u.s. officials tell cnn they believe al shabaab, the vicious al qaeda affiliate in somalia, is behind the attack. but the plot's gotten thicker. just three days after the plane

bombing, the two airport workers were in a car in mogadishu when it exploded. >> one was killed because he was still in the car. the other had got out of the car to go to a shop. >> a somali official tells us the two men may have been targeted to prevent them from speaking to authorities. the official says the suspect who survived is in custody and is giving information. but the official would not say what that information is. brian todd, cnn, washington. four people were wounded and a suspect is dead following a terrifying machete attack at a restaurant in the u.s. state of ohio. investigators haven't determined the motive for the attack, but they haven't ruled out terrorism. and say it is possible that the attacker was a so-called lone wolf. cnn's deborah feyerick has this story. >> reporter: the attack happened at the nazareth middle eastern restaurant in columbus, ohio. >> some guy pulled out a machete and started stabbing people. >> reporter: a man with a machete attacked and injured four people. one of them critically.

>> at the table right in front of me. he started attacking people. >> i thought it was a personal thing, and then he just started down the row, hitting everybody with something. i don't know. people were bleeding. >> reporter: officials say the attacker is 30-year-old mohamed barry of somali origin and has a drug-related criminal record. the fbi is looking into his recent travel and any potential links to jihad. the restaurant is owned by an israeli arab christian. the attacker was apparently inside the restaurant asking an employee about him. >> i was told that he left, came back 30 minutes later and attacked a person and then started slicing up people down the booths. >> reporter: people inside the restaurant fought back. some of them throwing chairs. another confronting the suspect. >> nobody inside from the people that we've spoken to, whether it be some of the patrons or the

employees, nobody said that they knew him. >> reporter: the suspect fled, driving off with multiple police cruisers chasing. >> trying to get out of the vehicle. he's getting ready to go again. he's moving again. >> reporter: police say they got the suspect to stop. he tried escaping out of the passenger door with his weapons. >> he had a machete. he had another knife in his hand. and he lunged across the hood at the officers. another officer in a cruiser fired a couple shots at him and put him down. >> reporter: one person initially critical was rushed into surgery and is now listed in stable condition. deborah feyerick, cnn, new york. for the first time since her teenage son helped mastermind the infamous deadly school shooting in colorado, dylan klebold's mother is now speaking out. klebold and his friend, eric harris, murdered 13 people at columbine high school. after the massacre they then

killed themselves. in her first interview ever, sue klebold says she overlooked possible warning sign taz her son was troubled, thinking that it was just teenage angst and says she is haunted by memories. >> i just remember sitting there and reading about them. all these kids and a teacher. and i kept thinking -- constantly thought how i would feel if it were the other way around and one of their children had shot mine. i would feel exactly the way they did. i know i would. i know i would. >> klebold's book about the ordeal comes out next week. her publisher says she will donate the profits to charities devoted to mental health issues. potentially deadly weather.

it is invading much of the eastern u.s. and our meteorologist, derek van damme, is here to talk about it. >> bitterly cold, george. 70 million americans at risk for windchills that could drop to 20, 30, even 40 below freezing, below 0, i should say. and it's so cold that in new york city, their annual ice festival that they have today being saturday has actually been canceled because it's too cold for the event. >> wow. >> take a look, this is coming out of scranton, pennsylvania. just to give you a glimpse. our viewers and for you, george, to see just how incredibly cold it is across the eastern u.s. this is in pennsylvania. water main broke. and that water froze on contact with all of its surroundings including light poles, street signs as well as a house. it actually displaced about 12 family members. but i want you to see this next picture that will come up on the screen in just one moment. there it is. just to give you an idea of how cold it must be for water to freeze on contact with something like that. now, here's the original area

where we're tracking this cold surge of air. we don't like to refer to this as the polar vortex, but it's really hard to get around it because it has all the characteristics of it. the arctic blast of temperatures is really originating in the arctic circle. we're talking about cold greenland temperatures that are being driven down into the upper midwest and eastern half of the united states. that's for the next 24 hours. in fact, upwards of 70 million americans under some sort of windchill advisory or warning. in fact, as we focus into the megatropolises of the east coast, philadelphia, washington, new york and boston, those locations all have some sort of cold spell coming toward them that's really going to be hazardous to people traveling outside. remember, it doesn't take long for frostbite to settle in. if you just look at, for example, the feels-like temperature, this would be when you put in combination of the actual air temperature as well as the winds. and you can see what it will feel like on your body.

and we're talking into boston, 30 degrees below zero. so it will be an extremely cold valentine's morning. in fact, that's when we anticipate this to be our coldest stretch of weather. that would be sunday morning for the east coast of the u.s. if you are traveling to the nation's capital, new york or boston, you want to be prepared for record-setting temperatures. in fact, we could easily tumble -- take down a 100-year record into central park which was set back in 1916, which was 2 degrees. we have a forecast low temperature of 0 degrees on sunday morning. so if you take that into consideration. the lake-effect snow machine kicking into high gear for some of the downwind areas. it should be really coming to an end because the lakes should be frozen this time of year, george. but you can see the difference between 2014 to 2016. we only have 6% of the great lakes currently frozen with ice. >> wow. i remember a couple years back, a lot more coverage. >> you could walk across lake michigan from muskegon to

milwaukee. but not the case this year. >> derek, thank you. still to come here on cnn, we take you to a farm in the united states that rescued neglected animals. see how with a lot of love, they are thriving in their new home. stay with us. neutrogena hydro boost water gel. with hyaluronic acid it plumps skin cells with intense hydration and locks it in. for supple, hydrated skin. hydro boost. from neutrogena

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sunday is valentine's day, and it's not just people that are feeling the love. dozens of animals rescued by the group farm sanctuary in the united states are learning to love and trust after enduring horrendous conditions. farm sanctuary's national shelter director explains how these animals are now thriving. ♪ >> with if any animal, all they ever really they'd is to feel like they're loved, and then they feel safe and secure. so they're like everyone else. you just need love. right? and somebody to jump on. they know that you're doing

something good, and they know that there is such a massive difference from where they were and where they are now. ♪ we see them at their very worst, trembling, not making eye contact, putting their head in a corner. it's just this absolute fear. like clearly once they calm down, this is not fear, when the babies get used to us, then she'll start to trust us. what it takes to get these animals to learn to love again is a lot of patience and time and just allowing them to be themselves and kind of reading what they need. let's go see mom. so they can see that it's okay to trust again. isn't that ridiculous! >> you can visit the group's website at farmsanctuary.org to find out how you can help or how you can even stay on the farm. that wraps this hour of "cnn newsroom." i'm george howell at the cnn center in atlanta. i'll be back after the break with more news from around the

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large crowds gather of catholics to give pope francis a rousing welcome as he arrives for a six-day visit in mexico. plus, world powers agree, a pause in the fighting in syria should happen, but syria and russia insist they will continue bombing terrorists. so what kind of pause can it be? and -- >> expected that we have a team of people that would help us identify the source of this bacteria, the source of this illness to stop it. >> new allegations in the poisoned water saga in flint, michigan. that state saying that officials

there failed to act to stop the spread of legionnaire's disease in the city. welcome to our viewers here in the united states and around the world. i'm george howell. "cnn newsroom" starts right now. good day to you. we begin this hour with pope francis in mexico city for his six-day visit there. he arrived friday night to cheering crowds. mexico's president, enrique p pineto, greeted him at the airport. they will meet again in a few hours for an official visit at the national palace. later francis will celebrate mass at the basilica of our lady of guadalupe. we expect the message of this visit will be about mexico's violence, especially the trafficking of victims. pope francis will also minister to the poor. >> translator: he's come to give us an example, to the priests, to the bishops, to all catholics

that we should all be present where people are suffering. that's where he wants to be present. the pope is telling us to get out of the temples. go where the people are living under tragic circumstances. this is the great example he gives us. >> the pope's schedule is jam packed. he's traveling to some of the spots hardest hit by crime including a stop at the u.s./mexico border in the heart of cartel country. shasta darlington has more on what we can expect to see over the coming days. ♪ >> reporter: some surprisingly melodious parishioners gearing up for pope francis's arrival. a six-day trip that starts right here. the basilica of the virgin of guadalupe, the patron saint of mexico. visited by millions of pilgrims each year. who pray before a 16th century shroud that bears her image.

according to the chaplain, pope francis seeks guidance at the start of his trip. "he's looking for her protection," he says. "he's entrusting his whole trip to mexico to the virgin of guadalupe." pope francis planning to visit some of mexico's poorest and most violent corners. from a sprawling suburb with the highest rate of killings of women to the center of mexico's narco war. pope francis chose this shrine because it's the most revered in mexico, in fact, in much of the americas. but it's interesting, talking to parishioners here, they say of course they want to hear his message of faith, but they're just as interested in having him shine a light on the problems of corruption and crime in mexico. "i would ask him to talk to authorities about the violence," says this woman. "especially the disappearances." this man traveled on foot for five days to reach the shrine. "the pope's going to visit the places where people need him most," he says.

"where he needs to motivate them so they don't lose faith." but here at the basilica, faith runs deep. for these musical nuns flying in from peru, the message is simple. ♪ when the future seems uncertain and fear weakens your faith, believe in god. shasta darlington, cnn, mexico city. before arriving in mexico, the pope had an historic meeting with the russian patriarch in havana, cuba. this is the first time a roman catholic leader has met with the head of the russian orthodox church since the two faiths split in 1054. the two men pleaded for the world to protect christians against isis. they said the meeting was an indispensable example of how and good will.

>> translator: a meeting of brothers. pope francis saidware broth we' brothers, we're christians. it was a dialogue among brothers who understood very well about the problems of their churches and the world today of which they want to serve together. >> the pope will spend his first full day in mexico on saturday, capped with a mass that he will celebrate at the basilica of guadalupe. stay tuned for coverage of his live visit right here on cnn. now to the war in syria. france's prime minister says russian warplanes must stop bombing civilians in syria for there to be any chance of negotiations and for peace. he, other world leaders and u.s. secretary of state, john kerry, are in munich for a security conference held there. they've gathered just days after kerry and fellow diplomats announced a pause in the fighting in syria. to begin in a week's time. but there are complications. and chief among them, russia is

not letting up on its airstrikes against rebel targets in the syrian city of aleppo. also, isis and other extremists are not party to these syrian talks. cnn's international diplomatic editor, nic robertson, joins us live now in munich, germany, with more on this. nic, good to have you. with so much happening around the world, what is the mood there among leaders? >> reporter: well, there's a lot of focus on syria and the leaders here will look at syria through this light, through the agreement that was made here at the international syria support group that is designed to put a cessation of hostilities in place in syria in a week's time. the reason that this got to that point, that talks got to that point, was because two weeks ago, peace talks between opposition rebels represented by the high negotiating committee and the syrian government, were brought together by the u.n. as the result of a u.n. security

council resolution to begin talks. but because the syrian government backed by russian planes were on a high-speed, high-intensity military offensive in and around aleppo including russian bombing, those peace talks in geneva were put on hold. that was the only way the u.n. could see to keep the talks alive because it was impossible, the opposition said, for them to come in and negotiate in good faith with the syrian government about peace when there was such a high-intensity attack under way. now, the agreement here is that the cessation will come in in a week's time. there will be humanitarian access in the meantime. but in the meantime in that week, there's real concern that the syrian government and backed by russia continues and wants to continue with a strategic military offensive around aleppo. so we heard today from the french foreign minister addressing that direct -- french prime minister, rather, addressing that directly to his

opposite number in russia, if you will, the prime minister there, dmitry medvedev. this is what the french prime minister said. >> translator: now, let me say as well to in all confidence and without any ambiguity to dmitry medvedev that france respect russia as well as interests and in fact the two presidents do speak to each other quite frequently, but we do need to have peace. we need to have negotiations, and for that, we need to stop bombings against the civilians. >> reporter: now, i've talked to the syrian opposition groups here, and they say they're hopeful about this new international agreement, but the test of it is going to be if russia stops its bombing. because if it doesn't, it's the status quo as it was two weeks ago which means how can anyone get into meaningful peace talks if there's a military offensive under way? so there is a lot of scrutiny on that. there was a hope in that meeting that there might have been some kind of language that said that russia should back off on its

offensive this week ahead of the cessation and hostilities in a weak's time. but i think we can certainly understand and take away from this right now that the international community and the task force, the military task force, or the cessation of hostilities task force that's been established as a result of the meetings here is going to pay a lot of attention to what happens in aleppo this week. so russia will be under a huge amount of scrutiny along with the syrian government about what they do on the ground in the light of a u.n. security council resolution that talks about a cease-fire and an agreement here that talks about a cessation in a week. the concern is, of course, that there is a military agenda playing out on the ground in aleppo. george? >> and as that continues, there are so many people who are just trying to get out of harm's way. again, nic robertson live for us in munich, germany, at these security talks that are taking place there. nic, thanks for your reporting

there. syrian government forces have made significant gains across the northern part of that country. of course, with the backing of russian air power. and cnn has gained unusual access to areas just north of aleppo that have been taken back by the assad loyalists. our fred pleitgen is in a town that endured years of fighting and has this exclusive report. >> reporter: god, syria, bashar and nothing else these villagers chant, in the pro-regime village. the mostly shia town was under rebel siege for more than three years. this 14-year-old lived through it and recalls the hardship. "it was very tough," he says. "many people got sick, and the kids were very scared. but after a while, we became numb to the fear." the siege was broken by the recent government offensive north of aleppo. now there is food in the local markets and clearly a lot of

support for the main backers of the assad regime, hezbollah, iran and russia. the people here are keen to show their affection for hezbollah, iran and russia. they believe that throughout the years of siege, it's these groups who stood by them and ensured this town's survival. the u.n. has strongly criticized the denial of aid to besieged areas in syria, accusing government forces, some rebel groups, and isis of using food and medicine as weapons. a new agreement reached by world powers hopes to put an end to these tactics. aleppo's countryside is now one of the main battlegrounds in this brutal five-year civil war. as pro-government forces press an offensive backed by russian air power, tens of thousands have fled towards the turkish border. on our trip, we saw scores of deserted villages, some clearly scarred by fierce fighting. government soldiers issued a

strong warning to opposition fighters. "their families should encourage them to look for reconciliation," he says. "otherwise they will be killed. they have no other option." but the opposition believes reconciliation is not on the government's mind. they say they are simply being slaughtered as the syrian military continues to push to try and retake the area north of aleppo in what many feel could be a crushing blow to anti-assad forces. fred pleitgen, cnn, syria. you're watching "cnn newsroom." still ahead, republican presidential candidates donald trump and ted cruz are at it again. and now mr. trump is threatening to sue over it. we'll have that story. plus, people are dying in a u.s. city because of contaminated drinking water. still ahead, a cnn exclusive. find out why it took so long to declare this a crisis.

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eligibility to become president since he was born in canada. the cruz campaign hit back, saying trump needs to, quote, go to the time-out chair and think about his choices. on the democratic side, hillary clinton just picked up big endorsements from newspapers in texas and florida. "the dallas morning news," "the houston chronicle" and "tampa bay times" all said they support her but they don't love her. the florida paper called clinton, quote, an imperfect candidate with political baggage that would sink most other politicians. mane while, bernie sanders faced a tough crowd on friday on the a forum on race and economic opportunity. first one panelist accused him of being afraid to say black. then another man in the crowd yelled at him about native american rights. attack ads are in full effect in the u.s. state of south carolina. ahead of that state's primary. cnn's mary maloney has this report. >> reporter: after autographing a baby in louisiana, donald

trump pledged to go positive. >> i won't use foul language. i'm just not going to do it. >> reporter: but less than 24 hours later, trump threatened cruz with a lawsuit saying if ted cruz doesn't clean up his act, stop cheating and stop negative ads, i'm going to sue him for not being a natural born citizen. cruz returned fire. >> there's more than a little irony in donald accusing anyone of being nasty, given the amazing torrent of insults and obscenities and vulgarities that come out of his mouth. >> reporter: in south carolina where voters will cast ballots later this month, the airwaves are plastered with spiteful ads. >> maybe shushd vote for more than just a pretty face next time. >> reporter: this one backfiring on cruz. his campaign pulling it after finding out this actress is an adult film star. cruz's team is refocusing with a news spot spoofing the movie "office space." ♪ damn it feels good to be a clinton ♪ ♪ a shameless politician always plays her cards right ♪

>> reporter: hillary clinton also in south carolina. >> i'm going to go after every single barrier that stands in the way of what americans can do. >> reporter: hoping the palmetto state slows bernie sanders's momentum following his big new hampshire win. >> thank you, new hampshire! >> reporter: the fight for the first-of-the-south primary will likely hinge on support from african-american voters who make up over half the democratic electorate in the state. clinton lost african-americans in south carolina to president obama in 2008. >> thank you, south carolina! >> reporter: but monday, another president will be in south carolina, george w. bush, wanting to lift his brother, jeb's, campaign. i'm mary maloney reporting. a former top official with the obama administration says hillary clinton should pull out of the presidential race. as the fbi investigates her use of a private e-mail server while she was secretary of state. lieutenant general michael flynn is the former head of the

defense intelligence agency. he spoke earlier with our jake tapper. >> i feel very strongly about this. number one -- and there's really two reasons why i believe this. number one, the severity of the leaks of the classified material, so this special access program, the top-secret, just the incredible level of classification that has been leaked through the use of a private server. >> what do you mean by leaked? >> i mean, leaked -- leaked in terms of just being passed on -- >> you don't mean getting out to the public -- >> it's in the public now. it's in the public domain now because it was on a private sear server that's available to china, russia and now what we're seeing in the open domain. >> just to clarify, you don't have any evidence that the chinese or the russians hacked her server? >> no, but we know -- we know the kinds of targets that they go after on a routine basis. you know, i could give you an hour's worth of targets that we

know that they've already hit that have been very public -- publicly discussed. i mean, from the joint staff to central command to the army, i mean, they've hit a bunch of these things. so hillary clinton as secretary of state is a target of those two adversaries. >> but no evidence yet. >> and then the other point, jake -- and the other thing that i think this is really important -- it's been stated that there are 100 fbi agents that are on this case. and yet we have the fbi director that has told us that in all 50 states, we have islamic state cases ongoing. and i know the fbi is just overwhelmed with white-collar crime, child pornography cases, transnational organized criminal cases as well as the islamic state. and now we have to put another 100 agents on this case of hillary clinton? >> isn't that a question of the fbi's priorities more than it is -- >> yeah. i mean, imagine that. if she were to step down -- >> yeah, but they would be investigated. >> the nation would allow itself

to back down a little bit and let this investigation run its course with her not in the limelight and making this such a big, big deal. i really do believe that the severity and the number of resources that are applied despite what the outcome is, i just think the lack of accountability, frankly, and a person who should have been much more responsible in her actions as the secretary of state of the united states of america. this is not -- >> right, no, i get that. >> if it were me, i would have been out the door and probably in jail. >> she and her supporters say this is an issue of overclassification. these are -- >> no. >> these are things that -- >> yeah. >> -- are classified now but were not at the time, or -- and you know this -- >> sure. >> -- part of this tug-of-war over, for instance, if i were to e-mail -- if i were an intelligence official and i were to e-mail a wikileak that was published in "the new york times," that is top secret. even if it was in "the new york times." >> overclassification or not, if

it's classified, it's classified. and she knows better. she knew better in the roles that she has had both as a for, both as a -- even back when she's married to the president of the united states, she's going to have privileged information in that regard and not only as the secretary of state, which is part of the national security council, so she should know better. >> not surprisingly, the clinton campaign had a quick response to the general's suggestion. spokesman brian thalen called the general's suggestion just silly and said previous secretaries of state handled their e-mails in the same way. listen. >> i respect the general, but that's not going to happen. look, this investigation, this review into the security of the e-mails should be allowed to continue without political interference and without side commentary from people that don't have an understanding of the fundamental facts. and just last week, you saw the

same situation unfurl with former secretary colin powell as well as former aides to secretary condoleezza rice. in both of those two cases, you now have the same agency looking at their e-mails, personal e-mails, and saying that there is information that in retrospect they think should be treated as classified. the exact same situation playing out in the two previous secretaries before secretary clinton. >> now to give you a look at some key dates that are coming up on the presidential campaign calendar. next up is the u.s. state of south carolina. the primary there. republicans go to the polls on february 20th, and democrats a week later. nevada holds its caucuses the same week. first democrats meet on the 20th and then republicans on the 23rd. and then on march 1st, it's super tuesday, primaries and caucuses will be held in 15 states and territories across the united states.

the republican candidates will face off tonight in their south carolina debate. and afterwards, our panel of experts will weigh in. that is saturday night starting at 11:00 p.m. eastern, sunday at 4:00 a.m. in london only here on cnn. all right. time to talk about some cold weather that is invading much of the east coast this week. derek van damme. >> 70 million americans currently under a windchill warning or advisory. this is extremely dangerous. a lot of people very vulnerable to cold weather like this. and we just have to, you know, give warning to people as they head outside this weekend. >> for sure. >> because obviously it is a holiday weekend in the united states. valentine's day. a lot of people like to celebrate outdoors, but they're going to have to keep this in mind. take a look at this video, george, coming out of scranton, pennsylvania. this is a water main break. you think, okay, well, what's new here? we've seen this before. but what you're about to see is just how cold it actually is over the eastern half of the united states. that water froze instantaneously

on power lines, street signs and unfortunately people's homes in the surrounding area. about 12 people displaced from their home. and the next picture you're about to see, just to show you, just the severity of that particular instance that took place. now, let's get to the nitty gritty. where is this cold weather coming from? well, we have to look way north towards the arctic circle. this is the particular region where temperatures have really gotten so cold. it is just starting to build across greenland, and it is eventually spilling into the eastern half of the united states from the upper midwest all the way to the new england coastline sunday morning. that is the area -- or that's the time frame where we expect our coldest of temperatures for places like new york city and into boston. we have over 70 million people right now under windchill advisories or warnings. that shading of purple from new york to new hampshire as well as connecticut and massachusetts. that is the area that has windchill warnings in effect. they could range anywhere from 25 to even upwards of 35 degrees

fahrenheit below 0. there's boston's forecast. old man winter having a rather cold heart for valentine's day into boston and new york city. and again, i mentioned that sunday will be our coldest stretch of weather. so be prepared for that. we could topple almost 17 record low temperatures across the eastern u.s. including central park. a record that has stood for over a century. you can see that back in 1916 record low of 2 degrees. our forecast low is 0. lake-effect snow machine still under full effect right now. and it's incredible to see, too, that the great lakes are only 6% frozen. where if you compare the past two years, can you see how much more frozen they actually were. so we should actually be closing off that lake-effect snow machine. but it's just not the case this year. it hasn't been cold enough. this is the coldest air of the season we've seen. >> that is telling. derek, thank you. you're watching "cnn newsroom." we'll be right back after the break. after brushing, listerine® total care strengthens teeth,

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welcome back to our viewers here in the united states and around the world. you're watching "cnn newsroom." good to have you with us. i'm george howell. the headlines. in just a few hours' time, pope francis will have an official visit with mexico's president. during his trip to mexico, the pope is expected to deliver messages of hope and solidarity. to victims of drug violence, trafficking and discrimination. farmers battle police in athens, greece. they are angry about pension reform plans and say that the proposed changes would lead to tax hikes and increased social security contribution. the eu and the imf have demanded greece reduce pension spending by 1% of gdp this year.

anti-government demonstrators march in bahrain's capital on tfriday, the fifth anniversary of the shiite uprising. the majority of shiite muslims have been demanding more rights from the monarchy since the arab spring erupted in 2011. a pause in fighting in syria's civil war is set to begin within a week's time. top diplomats from the u.s., russia and other nations all announced that they have agreed to a cessation of hostilities, but complicating the situation, russia which backs the syrian government says it will continue to bomb rebel targets in aleppo. the number of refugees and other migrants crossing the mediciterranean has fallen somewhat in february due to bad weather. that is according to the international organization for migration. nevertheless, it says more than 83,000 people have made the journey so far this year. but only around 5,000 of those arrived in february.

an estimated 83,000 refugees landed in europe so far this year. the eu's military force is trying to curb the flow of migrants making that dangerous journey by sea into europe by targeting human traffickers. phil black has been on a war ship off the libyan coast to find out more about the mission. >> reporter: we've been at sea in the mediterranean with italian and spanish naval forces for five, six days now. this is part of the eu naval operation against people smugglers operating out of libya. we started when we were first transferred to the italian aircraft carrier, the command ship for this entire operation. it is big. it's pretty new, and it's really very impressive. from there, we came here, the spanish frigate. in pretty big seas, we've been carving through the south of the med. these conditions here have been too big, the swell too rough, the winds too strong for people smuggling boats to put to sea. so in the meantime, the crew of these vessels, they need to train. and so we witnessed the marines

aboard the ship conduct a boarding exercise. the marines are the ones responsible for approaching, making the initial approach to the migrant vessels. giving a security assessment, making sure that there is no threat. during our time at sea, we spent a lot of time clambering in and out of helicopters. aboard the helicopter here, we were able to get very, very close to the libyan border. through the haze, you can see the libyan coastline in the distance. we're 12 nautical miles away at the very edge of libyan territorial waters. this is as close as these forces can get to where the people smuggling operations are based. living aboard a frigate built in the 1980s, the late 1980s, it takes some getting used to, but it's also really good fun. at least for a few days in the way that we're doing it. but you get a real sense of what a challenging environment this would be to live in in the long term.

so it is, of course, incredibly narrow. the confined space, we got lost a few times. actually, we're on the wrong deck. the hallways narrow, passing people all the time. buenos dias. we were warned that the single most dangerous thing aboard the ship are these narrow, steep ladders and stairs that separate the decks. and this is where they control the ship. and it's a pretty extraordinary view. to get a sense of where this ship has been operating, where we are, what we're waiting for, this is a map of the southern area of the mediterranean. i'm not allowed to show you the area that shows the coast of libya, but the people who run the operation, they talk about the triangle. if you imagine the coast of libya down here, there is tripoli on the eastern side. to the left heading towards the border with tunisia. it is from here, they say, this stretch of coast, the boats leave and head out north.

that's the triangular shape heading more towards the center of the map. so today as the ship has been plowing through seas much bigger than what you see here now, this is pretty flat. the winds are pretty gentle by comparison. they've come down a long way. this, the crew believes, makes it more likely that you're going to see some sort of migrant boat movement. but where we've been positioned for a couple of days now, we've been holding a pattern to the northwest of tripoli probably just to the northwestern side of the libyan coast in international waters, waiting here in a position the crew believes is beyond the detection of the people-smuggling crews and operators back on the libyan coast itself. >> we will arrive at 15 nautical miles. >> reporter: this is one of the marines stationed aboard a 50-caliber weapon trained on the side. he is looking out and ready for the possibility of some sort of attack from a smaller vessel. what the commanding officer describes as a terrorist attack. >> phil black reporting there for us. the united states is

deploying additional patriot missile systems to south korea. the u.s. military says it is a move meant to counter north korea's recent provocations and to promote peace and security in the asia-pacific region. the patriot system can defend against incoming missiles as well as aircraft. now on to venezuela where three people have died from complications linked to the zika virus. the country has now 319 confirmed cases of zika. meanwhile, the world health organization says potential vaccines have emerged to fight the virus, but large-scale trials are at least a year and a half away. brazil is also battling the zika virus. and now that carnival has come to an end in rio de janeiro, the fight against the virus is now entering a new phase. cnn's nick paton walsh reports it involves hundreds of thousands of soldiers. >> reporter: as the carnival ends, here comes the parade.

a total of 220,000 brazilian troops, that's 50 times more than you see here due saturday to go door to door for a week, making a lot of noise about zika. ♪ in their sights, ignorance and the pools of stagnant water mosquitoes breed in. it's a massive urgent task. so why not earlier? >> first of all, the whole world know you have carnival, okay? not only because that, you have to take a little bit of time to prepare ourselves. the soldiers, before they received lectures about how to proceed, how to behave, when to approach the brazilians' houses or the civilian population, how we have to say to them, so you need a little bit of preparation. >> reporter: now, this massive mobilization isn't going to make a dent, really, in brazil's stagnant water mosquito problem, but it might get brazilians who still aren't listening to pay attention to the threat of zika,

but possibly most importantly, the outside world. the brazilian state is doing everything it can to combat this outbreak. here's one place they're needed most badly but may be least welcome. one of rio's many, actually, this is among the less cramped ones, but imagine trying to eradicate all the water pools here. andre is a local activist and not a fan of the police who often come here to pacify all the developers who gentrify. if the army came up tomorrow, what could they do to help? are they going to be welcome in a place like this? "this aid coming from the military is just for show. it's aimed at worried tourists thinking about coming to visit during the olympics. it's an artificial action, and that's something the brazilian government does quite often." yet the disease is real and took samuel out of action for six days of aching joints, red eyes and rashes. his focus now, protecting little otto. "it's really complex, especially

for children," he says. "i use a mosquito net to protect him, but mosquitoes constantly breed in this heat. in the rain like we had yesterday, a lot of people leave receptacles out. rain gets in them. the mosquitoes breed, nobody pays attention, and we get sick." drainage ditches like this that take away the rain don't really solve the problem. a mosquito really only needs a capful of water to breed. we learn of a young mother living here who had zika when pregnant, and today near her term was rushed to hospital. her family, though, wanting privacy. zika hitting hardest areas where the day's burden is already enough. nick paton walsh, cnn, rio de janeiro. still ahead, a cnn exclusive. a county worker in the united states tells us dozens of deaths from poisoned water in flint, michigan, could have been avoided. that story is next.

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for the first time, we are hearing from the mother of one of the gunmen behind the columbine school massacre. dylan klebold and his friend, eric harris, murdered 13 people at columbine high school almost 17 years ago. after the massacre, they then killed themselves. in her first television interview, sue klebold says she overlooked possible warning signs tahhat her son was troubl, thinking that it was just teenage angst, and she says she is haunted by memories. listen. >> i just remember sitting there and reading about them.

all these kids and a teacher. and i keep thinking -- constantly thought how i would feel if it were the other way around and one of their children had shot mine. i would feel exactly the way they did. i know i would. i know i would. >> klebold's book about the ordeal comes out next week. her publisher says she will donate the profits to charities devoted to mental health issues. now on to flint, michigan, where the poisoned water system in that city has caused outrage across the country. we've been reporting for weeks now on this manmade disaster. a switch in the city's water supply to save money exposed thousands of people to lead and other toxins. concerns were raised almost immediately, but officials waited 18 months to finally react. meanwhile, people started getting sick and dying from legionnaire's disease. a county worker tells cnn

exclusively that those deaths could have been avoided. >> reporter: in the summer of 2014, people in flint started dying in what would become one of the worst outbreaks of legionnaire's disease in u.s. history. >> we were suspecting the city of flint water supply. >> reporter: after the city began drawing from the highly corrosive flint river, brown water started flowing from taps. >> that was the big red flag. >> reporter: eventually toxic lead would be discovered, but that summer the county health director hadn't found the source of the legionnaire's disease which by that point was already killing people. so he got in touch with the cdc. when you reached out, what did you expect to happen? >> we expected that we'd have a team of people that would help us identify the source of this bacteria, the source of this illness to stop it. >> reporter: but that didn't happen. the centers for disease control,

the federal agency tasked with investigating outbreaks, didn't show up. and the county health director, jim henry, says michigan state officials purposely kept them away. >> our whole team was angry. it was -- you could see that it was an intentional, deliberate method to prevent us from doing our job. >> reporter: according to cdc protocol, a state must invite the cdc to investigate an outbreak, and michigan did not do that. >> the state stopped our investigation by prohibiting us to communicate. they prohibited communication between the centers for disease control and genesee county health department. they prevented that team to come here and help us find the source. >> reporter: legionnella thrives in warm weather, and henry says he was racing against the clock trying to prevent another outbreak from happening the following summer. still hoping the cdc would come and pinpoint the cause.

>> it was infuriating. >> reporter: michigan state officials did provide assistance but never found the cause of the outbreak. the state would not agree to an interview, saying only this. "we were able to meet the epiddemiological case investigation need in the county." but the cdc tells cnn that it felt a comprehensive investigation was warranted and offered to further assist michigan. in this case, michigan felt that they had the skills and resources needed to perform the investigation themselves. as the weather warmed in 2015, just as henry had feared, there was a second wave of cases. but to henry's astonishment, the state had already declared the legionnaire's outbreak over. when you read that, what did you think? >> there must be a mistake. we had two new cases in june. we had multiple cases.

and to determine the outbreak over must have been some sort of mistake. >> reporter: that's what you thought at the time. >> that's what i thought at the time. >> reporter: what do you think now? >> it was intentional. to stop the investigation. that would implicate the flint water system and this outbreak. >> reporter: by summer's end, four more people would die. including 58-year-old debra kidd. her son, troy, says she got sick after visiting the er for a migraine. she didn't know there were high levels of legionnella in the water supply. his family is now suing the hospital and the state. >> i think it's a cover-up. i think it stinks. i think they knew there was something more going on than what they wanted to really let on. >> that exclusive report by cnn's sara ganam reporting for us. you're watching "cnn newsroom." for seven generations, a london family have been tailors to the stars. chances are you've seen some of

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helping to create movie magic for seven generations now. the angel family is one of the world's biggest providers of costumes to the film industry from recent oscar nominees "the bridge of spies" or "the danish girl" or classics like "star wars," you've likely seen their magic at work. we take you to the angel family's breathtaking london warehouse. >> reporter: the warehouse at angels costumers. >> we create worlds. we make-believe. we've got a huge dressing-up box. >> reporter: this is just part of the 8 1/2 miles of clothing rails stored here. housing the imaginations of some of the most famous directors, writers and designers in the world. >> this is one of my favorite films, which was "where eagles dare." it's got a little label here, i think, that will probably say "clint eastwood." >> we've got company. >> reporter: for seven generations, tim angel's family has been making costumes worn by some of the most beloved

characters on the stage and screen. >> "fiddler on the roof," which we did and "the king and i." "star wars" was one. we work on "game of thrones." "the danish girl." >> the only person who made sense of me. >> reporter: these rails play host to a multitude of worlds including mars. >> i loved "the martian." when they were doing that, the costume team would come in here to get inspiration for what they did. >> reporter: this is "shakespeare in love," joseph fiennes. >> to show for it. >> reporter: just feeling this, the detail is extraordinary. >> and this was "my week with marilyn." >> it is my special pleasure to introduce a woman who clearly needs no introduction. >> she has a bottom. >> reporter: michelle williams had to have a false bottom. >> well, yeah, because marilyn monroe had a very narrow waist and big hips. >> reporter: yes. >> i presume. >> reporter: it all adds up to

an awful lot of work. but even the simplest concepts still need an intricate attention to detail. one of the film's angels worked on recently is "lady in the van." >> this is maggie smith from "lady in the van." it all looks believable. and my mother-in-law's boots. >> reporter: even with a meticulous organizing system, things still go missing including one of the most iconic costumes of all time. obi-wan kenobi's robe turned up one day out of the blue. >> it was a monk's robe that had been hide out for dress parties. >> reporter: so someone inadvertently hired the original? >> not just one person. i think loads of people. >> reporter: angel says they never know whether the film they're working on will be successful, but often it's enough just to know they've played their part in making movie magic.

>> we're working in a make-believe world. we're working with people that are larger than life, and it's great. you know, you still get star struck. >> reporter: cnn, london. >> so much to see in that warehouse. now, talk about a fan. kanye west is being offered $10 million to sell his new album, "the life of pablo," to only one person. that person happens to be embattled former pharmaceuticals ceo martin shkreli who is currently facing charges of security fraud. shkreli once paid $2 million for the only copy of an album by wu-tang clan. no response yet from kanye west. we thank you for watching this hour. i'm george howell. more news after the break. wiback like it could used to? neutrogena hydro boost water gel. with hyaluronic acid it plumps skin cells with intense hydration and locks it in.

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good morning. and you are up early. we're so glad to have your company. i'm christi paul. >> and i'm victor blackwell. we're hours away from the gop debate face-off in greenville, south carolina. this time six candidates on stage and expect even more aggressive attacks. senator marco rubio going after former mentor former florida governor jeb bush. now, bush is ramping up his attacks on front-runner donald trump, and despite a pledge to stay above the fray, donald trump is threatening to sue