that's something to drink to, no matter where you are. thanks for having us out. >> thank you. >> thanks for letting us play around with the forge and thanks for doing what you do. >> thanks for coming out. the united states admits it accidentally killed two hostages in a drone strike aimed at terrorists. rising tensions as protesters in one u.s. state demand to know how a man was fatally injured while in police custody. on patrol with the rescue workers trying to save migrants in the mediterranean. welcome to our viewers here in the united states and around the world. i'm george howell. this is "cnn newsroom." and we begin in washington where u.s. president barack obama says he takes full responsibility for

a drone strike that killed two western hostages. the american and italian aid worker were being held at an al qaeda compound near the pakistan/afghanistan border. senior white house correspondent jim acosta has details. >> president obama was forced to face one of the harsh realities of this war on terrorism that even precise drone strikes can go horribly wrong. >> it is a crew and bitter truth that in the fog of war generally and in the fight against terrorists specifically mistakes, sometimes deadly mistakes, can occur. >> one of those mistakes happened in january when the cia conducted a drone strike near the afghanistan/pakistan border that inadvertently killed two host aemgs. u.s. government contractor warren weinstein and italian aid worker giovani la porto. >> i simply want to say this.

as president and as commander in chief, i take full responsibility for all our counterterrorism operations. i profoundly regret what happened on behalf of the united states government. i offer our deepest apologies to the families. >> the obama administration sains says weinstein and la porto died in the first of two counterstrikes after hundreds of mours of surveillance that determined there were no civilians present. they caution the air assaults were aimed at the al qaeda pounds, not members of the group. but killed in the strikes were two american terrorists. weinstein's widow released a statement saying we are devastated by this news and the knowledge that my husband will never safely return home. but those who took warren captive over three years ago bears the responsibility.

>> that was essentially the reaction on capitol hill. >> we need all the facts for the families and so that we can make sure that nothing like this ever happens again in our efforts to keep an american safe. >> but critics are raising questions. >> the cia apparently does not even know who it has killed until weeks after the fact. that calls into question not just the standards under which this lethal force program is being carried out, but the relieblth of the intelligence that has been used. >> the white house press secretary josh earnest pushed back on that assessment when he refused to offer many specifics about the strikes and declined to use the word drones, he argued that sometimes they're necessary. >> we can't use special operations trips to go after every terrorist in the world. we can't conduct an osama bin laden style raid against every terrorist. >> jim acosta, cnn, the white house. the drone program has been controversial, to say the least.

let's bring in now cnn military analyst lieutenant colonel rick francona, live from windsor, california, for some context on what's happening here. good to see you, rick. here is the thing. officials admit that they had a great deal of surveillance on this compound. how could the government get this so wrong? >> well, the problem is, they've been watching that. they wampd that compound for hundreds of hours. they knew bad guys were there. unfortunately they were not able to determine there were hostages there. here is the problem when you're dealing with this. the hostages are your best tool if you're holding it. you want to make sure that you keep them alive and you keep them to use as a bargaining chip. they're no good to you dead. so you protect their identity and their location at all costs. you don't know anyone to know where they are so you don't talk about them, you make sure they're never seen in public and you make sure that no one in your cells know where these people are. once they know where you are, the united states knew where

these people were, they were trying to go get them. if they knew they were there, they would not have struck that site. >> rick, is it fair to say that these operatives on the ground with the drones overhead, that they used the hostages to prevent themselves from being targeted? >> well, that's one theory. you could say, okay, we have hostages, we're going to use them as human shields. they prefer not to use western hostages as human shields because they know western intelligence agencies are going to detect it and they know western forces special forces may come after them. they'll primarily use civilians local population as human shields to protect themselves. >> rick, we also learned about the deaths of two other americans affiliated with al qaeda who were killed on drone strikes. some criticize their killing as death without the opportunity for a trial. >> yeah. we have this discussion when anwar was targeted. he was targeting expectly to be

killed. these two were killed almost as collateral damage on a strike of a group of al qaeda leaders. they were in the wrong place at the wrong time. so you can say their deaths rm technically accidental. the question is, what legal protections do they have once they join al qaeda? >> with the death of americans at the hands of drones, it has certainly brought a lot of attention to this program. mr. weinstein's wife even criticizing the administration in how it supports the families and, you know, the hostages themselves, but lays the blame at the hands of his captors. the question many people are asking, though, as more attention comes to the drone, the use of drones, what changes? >> well, i don't think anything is going to change. remember, this happened in january and we're still conducting drone strikes. they've tightened up the rules a bit, but the drone is a valuable tool if you cannot get a special forces team into an area and you know that there's something going on there.

now, we're going to, unfortunately, have collateral damage. it is impossible to conduct these kinds of operations without killing innocent people. and the intelligence is never going to be perfect. i think as long as we're going to be conducting this war on terrorism, we're going to have to face that reality. >> lieutenant colonel rick francona, thank you so much for taking time with us. now to the streets of baltimore, maryland, things are calm after sporadic clashes between protesters and police early thursday. hundreds of people marched in support of freddie gray, again, on thursday. gray, a 5-year-old african-american man died sunday in police custody. his death sparked days of protests which intensified on thursday when two people were arrested for disorderly conduct and destruction of property. take a look at cnn's brian todd got caught up in one confrontation earlier. >> all right. let's go over here.

watch out, watch out. here, they just got another man. easy, guys. we're being pushed, but you can see was going on. when they try to arrest someone, they are being swarmed by these protesters. okay. okay, ma'am. thank you. and some objects are being thrown. i'm not sure why that man was arrested. i didn't see what he allegedly did. >> very tense moments there on the streets of baltimore. meantime, police say the whole protests on the whole, that they were peaceful. police officials also said they are investigating gray's death and will turn over its findings to the state's attorney's office on may 1st. ten years ago, a man died from a spinal injury after riding in a baltimore police van. and the question now, could these two cases be more than

just coincidence? joe johns has more on that as well as reaction from the police union on gray's death. . >> freddie gray, under arrest at least partly mobile as he enters a baltimore police van. a police union lawyer says the answer to what killed gray lies in what happens next. >> something happened in that van. we just don't know what. >> if gray wasn't struck by officers, then the likely explanation for his severed spine, a fall against the van's metal interior, possibly caused by a rough ride. the police union says it may have been an issue in the past. >> something police tell us on the street a lot that that happens. and by 16 years of representing police officers, have i had anyone disciplined for that? no. >> but it's more than urban myth. november 2005, dondi johnson, walking home from a bar, stopped here to relieve himself. that offense is usually punished with a ticket, but johnson was arrested and transported to a

police station, unbelted in a van. at the station, johnson complained that the officer was driving like a [ bleep ]. i fell and i can't move. taken to the hospital. he told the doctor, the wagon made a sharp turn. i fell, hitting face first. heard a pop and blacked out. phillip has filed two lawsuits against the baltimore police department. >> clearly it's not a problem with the vans. it's a problem with the van operator. >> like gray, johnson had a severed spine. he died two weeks later. dondi johnson's family filed a lawsuit against the department. at trial, officer leak who drove the police van testified i did not seat belt him because she thought he had a full bladder. she denied purposely giving him a rough ride. the johnson family was awarded a wrongful death verdict and won

$1.4 million. but on appeal, it was reduced to $500,000. now the gray family is wondering if these two early similar cases are more than just coincidence. >> european union leaders are pledging to triple the funding for search and rescue operations in the mediterranean sea just days after a migrant ship cap sized leaving more than 800 feared drowned. the $130 million a year financing now puts the operation on par with a similar mission by italy that was controversially canceled last year. after wrapping an emergency summit thursday, britain says it will pledge three ships and rescue aircraft and france and germany say they will provide two ships each to the multi layered mission. >> translator: first, we must do everything to take on and continue the fight against human traffickers who, in an inhumane way endanger people's lives and

kill them. secondly, we'll work intensively on the causes in the flight. here, we need your knowledge, too. third, this is the most important point right now which moves all of us. we will do everything we can to prevent more victims dying an agonizing death in the mediterranean in front of our doorstep. >> despite that terrible loss of life a few days ago, illegal crossings are still happening. ben wiedeman joined eye trillionan police off the coast. the island has become a destination for migrants making that dangerous journey from africa. >> late afternoon and captain john lucca busenera navigates his ship out of the port. he's with italy's finance police. he and his crew of 12 have the late shift on the mediterranean. not long ago, they were busy chasing smugglers of cigarettes and drugs. now the finance police are on

the lookout for human smugglers and their desperate victims. >> we call the mediterranean a sea, but out here, it seems more like an ocean. the water is deep and dark. it's cold. and it's a terrible place to die. the crew knows only too well how terrible. in october 2013, they took part in rescue operations when a ship carrying hundreds of migrants sank off the coast. more than 350 people died. a 21-year veteran of the finance police, captain busenera says that day will stay with him forever. >> to have seen all those dead bodies was something that's hard to put in words. but what stayed with us is the pride to have been able to rescue four.

>> on this patrol, they came across a tunisian fishing boat. the tunisian coast is only 70 miles away, but nothing suspicious. down below, cortesi prepares dinner for the crew. he enthusiastically explains how he'll prepare pasta with asparagus, but turned serious when i asked him about his worst moment at sea. i still remember, he says, pulling out of the water with our hands a young, pregnant woman who had just died. almost the entire crew took part in the 2013 rescue mission. memories are still vivid. there were children. we recovered the bodies of children, says crew mate ensodoni. it was a bad situation.

what i remember, adds geitano, was the body of a boy we recovered. we put him in a body bag. his head was in this hand. at the moment, we were too busy to think about it, but when we go home and try to go to sleep, it all comes back fous. hard memories to ponder as they scoured the black sea for signs of blood. just a short time ago, a magnitude 5.9 earthquake struck near wellington, new zealand, according to a report from the u.s. geological survey. people in wellington and across the southern tip of the island reported feeling intense shaking. a person on the south side of the island told cnn that it was strong and that it shook things off the shelves of their office, but everyone there is okay, we understand. we will keep you updated as we

learn more about that earthquake. parts of southern chile are under a redd alert. 4/thousands of people are being evacuated from the area. wednesday's eruption was the first in almost half a century. ash clouds forced officials to cancel some flights in both chile and argentina. north korea's neighbor and closest ally is putting out a frightening new report warping of pyongyang's nuclear capabilities. that story is ahead. and then a u.s. general who divulged classified information to his loafer has learned his fate. what david petraeus had to say outside the courtroom. hello! this little beauty here is top-of-the-line. see, you just pull like this to go left. and like so to go right. where are the brakes? uh, just grab ahold of both and pull straight back.

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but checks hundreds of websites so people can get the best hotel prices to plan, compare and book the perfect trip visit tripadvisor.com today on the u.s. stock market, the nasdaq set a new all-time high on thursday. it climbed to 5,056 points, closing at the highest number we've seen in 15 years. market is the home of the tech

giants like apple, facebook, google and amazon. experts say this means the market has finally recovered from the dotcom bubble. that burst, as you'll remember, back in the year 2000. u.s. general david petraeus must serve two years probation and pay a $100,000 fine for sharing classified information with his loafer. >> today marks the end of a 1/2 year ordeal that resulted from mistakes that i made. as i did in the past, i apologized to those closest to me and to many others, including those with whom i was privileged to serve in government and in the military over the years. >> petraeus there speaking to the cameras. he admitted to having an extramarital affair with his biographer, paula broadwell. he resigned in november 2012 after the affair became public. prosecutors agreed not to send petraeus to jail because none of the classified information was

ever made public. there are new fears about north korea's nuclear program and one of the governments sounding the alarm is one of the few governments friendly with pyongyang. meanwhile, others are becoming fearful the north koreans are creating a missile that could be a danger to u.s. territory. >> it's a frightening new assessment from north korea's neighbor and closest ally. china warning kim jong un could be closer to successfully creating nuclear weapons. china's top nuclear experts warn the erotic and unpredictable leader has as many as 20 nuclear weapons and is racing to double that by the end of next year. >> they are noticing the same things we noticed in our report, which is the north koreans are

expanding their nuclear arsenal and have been doing that for five years. >> joel of the u.s. korea institute made a similar assessment in february, along with the institute for science and international security headed by former weapons inspector david allbright. their alarming report warned kim jong un is beefing up his nuclear weapons stockpile at warp speed. >> worst case, they could end up with a hundred nuclear weapons by 2020. >> but now china, north kraeps ae ben factor is trying to reflect growing concern over the north korea threat. >> the chinese are being realistic and understand that a growing north korean nuclear threat not only has implications for the united states and its allies, but also has implications for china. >> 2 frightening new chinese estimates are even more concerning given this warning by a top u.s. military official this month. north korea, he says, is now

capable of launching a nuclear tipped missile that could potentially reach the u.s. west coast. >> our assessment is that they have the ability to put it on nuclear weapon and shoot it at the homeland. that doesn't necessarily mean they will fly it before they test it. >> a night nair scenario could provide diplomatic cover to build the nuclear weapon. just like the framework with north korea did. the u.s. says it learned its lesson with north korea, which is why the nuclear deal they're negotiate, iran would have much tougher inspections of their nuclear facilities. to ensure the iranians don't cheat like the north koreans did. cnn, washington. it was a five-month battle, but the u.s. senate finally confirmed the president obama's nomination for u.s. attorney general loretta lynch. >> in this vote, the yeas were

56 and the nays were 43. the nomination is confirmed. >> that 56-43 vote makes lynch the first avenue can american female attorney general in u.s. history. lawmakers in the republican-led senate refused to vote on her nomination until democrats cut a deal on abortion language used in a different bill. that legislation passed on wednesday, endsing what has been a bitter standoff. a reminder to tune into cnn later today to see a ground breaking debate hoeftded by christian amanpour. she's brought together a panel of officials. what makes this distinct is you'll see reaction from the studio office. that debate is tonight. in indiana, a high school musical performance came to an abrupt end. take a look at this.

♪ that collapse injured nearly two dozen students. at least one of them critically injured. it happened at a high school near indianapolis. reports say the students had gathered for the last song of the concert. an american aid worker accidentally killed by a u.s. drone strike. just ahead here on "cnn newsroom," more about warren weinstein and what the u.s. president says about that tragedy. plus, cnn goes to one african refugee camp after warning their friends are now dead trying to cross the mediterranean. i vowed to eradicate it from the earth. so he founded huntsman cancer institute. ♪ everything about it would be different. ♪ it would feel different. ♪ look different. and fight cancer in new and different ways.

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welcome back to our viewers around the world. you are watching "cnn newsroom." days after a tragic migrant disaster in the mediterranean, european leaders say they will triple the budget for search and rescue operations. it was one of many options being looked at to stem the flow of migrants to europe. over 850 migrants are feared dead after a ship capsized off the coast of libya late saturday. in baltimore, maryland, at least two people were taken into custody thursday evening as protesters upset over the death of freddie gray scuffled with police. dre, a 25-year-old african-american man died auto sunday, a week avenue he was arrested. police officials have said they're investigating his death and will turn over their findings to the state attorney's office on may 1st. indonesia's attorney general

has ordered preparations for the execution of ten death row prisoners. we know that these are members of the so-called bali 9 drug ring. a spokesman for the attorney general say this is not the legal required 72-hour given for execution but, quote, the time is approaching. after the hundreds feared did he tell dead after a migrant ship capsized, many of the people who attempted to cross the mediterranean came from eritrea. in this exclusive report, cnn went to the refugee camp where people are now in mourning, remembering their friends lost at sea. >> south to the border with ethiopia takes us to one of the largest refugee camps. for 25 yooerldz, reitrean has been a point for those escaping

troubles at home. >> do you know how old he was? >> 29. >> and sul man, how old is he? >> he's 27. >> this is the camp's list that details the names of every refugee camp here. these are the people who have drown making that trip. right height pb this is a community in mourning, heart broken over their loss. trapped in the camp's dusty isolation. many here have been waiting years to be legally resettled to a receiving country. they say they understand too well the frustration that drove their friends to risk everything. >> how long have you been friends? >> since we were kids. since we were kids. >> you came to -- >> in high school, university, we've been together. >> you made the journey here together?

yes, together. and went to follow his way, also, his roots. >> even though you died trying? >> yes. he died trying. >> but there are things no one here will talk about, like what life is like back home in eritrean. a country human rights group says it is void of human rights and humanitarian aid. >> my father has been missing since 20 years. my mom was kidnapped that time when they tried to kidnap my father. >> one man did agree to speak with us as long as his identity was concealed. >> i walked on for four days and walking day and night. >> why so many people so desperate to leave eritreans?

>> because of forced -- you settle in the country for unlimited period of time. >> unlimited? >> yeah. you don't know where you are going to -- oftentimes life in eritreans is very bad. they command us, do whatever things they want. they punish you. they don't have any rights. only working without payment, without even sufficient food. >> it's essentially slave labor. >> yeah. slave labor. no one wants to serve like this. >> if you had the money, would you take the risk? >> sure.

>> you would do it? >> yeah, i would do it. >> that's why all the young -- >> back at the camp, i asked henna what his friends told him before they left to make the crossing. >> the only option is they told me that they are going to the mediterranean in order to get a better life in europe because there is no solution here, no solution back home what can they can do. we are living in limbo situation here. >> it's a question here are asking. rich it all for a better solution or wait and hope the world remembers her. in the fog of war, u.s. president barack obama said mistakes, sometimes deadly makes can occur. that's precisely what he says occurred during an anti-terrorism strike against al qaeda in january. two hostages, giovani la porto and warren weinstein were killed where militants were secretly

holding them. mr. obama said the intelligence had no idea the two aid workers were there. but in an extraordinary moment, he apologized to their families. listen. >> as president and as commander in chief, i take full responsibility for all our counterterrorism operations. including the one that inadvertently took the lives of warren and giovanni. i profoundly regret what happened. on behalf of the united states government, i offer our deepest apologies to the families. >> mr. obama says the strike that killed the of theages, and he says a well known american-born operative was killed in a separate attack. cnn correspondent simon mosin has new details on with he instein's captivity. she joins you now with bangkok with this information. what more can you tell us about

the demands that these captors were making? >> nigel, i have been following this story for many years now. speaking to one of the groceriers involved closely with the back and forth between the family and warren weinstein's captors in particular, what he's told me is that the last proof of life was last year in june 2012. that is the husband and wife double. and they were hoping for another proof of life. in recent months, the negotiations were continuing and then things seem to have gone quiet. and so he said that there was also various changes along the way since the abduction in 20

11. at first, the want carries wanted money and then it changed to almost a politically motivated abduction. they wanted a prisoner swap and that is why they were keeping warren weinstein alive. they wanted their jobs back in explaining for there are aid. warren was going to get my extra keys out. as his family point pd out, he was trying to peek erdup. >> the u.s. president afollow guising in the meantime. mr. with he instein's wife reportedly criticizing the government for its handling of hostages and their families, calling it inconsistent, though saying the families will be financially compensated. that's the reaction from washington that we know. what is the reaction from pakistan?

well, a slightly similar reaction as far as the apology is concerned. it's extraordinary, of course, for many years, the united states didn't even accept that it was carrying out drone strikes on pakistani land. neither did the pakistani government. it was a very silent tour, if you like. and the reaction to the apology from human rights group representing other drone victims. they believe to be innocent, collateral damage in this drone war have come out and maybe she needed that. but what about other innocent victims? as far as the pakistani government is concerned and the military, we've contacted them last night and today. no reaction from them so far. the pakistani embassy in the united states releasing a statement expressing deep regret and profound respect for warren

weinstein, expressing their c condolences to his family. >> they're live in bangkok. thank you for your reporting. it was one of the bloodiest military campaigns in history. coming up here on "cnn newsroom," remembering the battle

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armenia is honoring victim eps of even that's has happened 100 years ago today. during world war i and in the final years of the ottoman empire, turks slaughtered up to 100 million armenians.

turkey has long rejected the term genocide saying it was a time of war and that hundreds of thoses of people from different ethnicities died on the battlefields. some 20 countries formally resides what happened as genocide. the u.s., israel, united kingdom, those are the ones that do not recognize it as genocide. another painful anniversary, 100 years ago saturday, allied forces and troops launched a naval attack to capture the ottoman capital during world war i. it became the bloodiest military campaign in history. here is cnn's anna korin with a look back at the battle of gallipoli. >> the last post rings out at dawn on a hillside in turkey. in a haunting memorial to the fallen soldiers lost in the gallipoli campaign.

the key battle in world war i began 100 years ago. when the allies led by britain and france along with troops from australia, new zealand and india landed on the gallipoli peninsula. the invasion was meant to knock the ottoman empire out of the war by gaining control of constantinop constantinople, now modern day istanbul. but it turned into an eight-month operation. the allies faced fierce resistance from the turks, along with searing heat and grim conditions that led to rampant spreading of disease. it became one of the bloodiest battles in history with hundreds of thousands killed and wounded on both sides. now, anzak day is one of the most important events for australia and new zealand. thousands of people travel to join the memorial in turkey and

many mark the occasion at home. a moment of sadness and pride as they pay tribute to the sacrifice of their ancestors who displayed courage, endurance. the essence. >> i shall grow not old as we that are left grow old. age shall not we'rely them nor the years condemn. but the down of the sun and in the morning, we will remember them. >> anna korin, cnn. it transformed our view of the universe, bringing us incredible images of planet webs stars and distant galaxy. now the hubble space telescope is marking 25 years exploring mankind's final frontier. people ship all kinds of things. but what if that thing is a few hundred thousand doses of flu vaccine. that need to be kept at 41 degrees. while being shipped to a country where it's 90 degrees.

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we're talking $1,500, some even as high at $7,500. the showdown happens saturday, may 2nd. we've been telling you about that volcano in chile. lightning erupted, as well. >> every time i see these photos floating around on social media, they get better and better. i have to show you, the audience really needs to say this. this is incredible stuff. lightning within the eruption column of the volcano. this stuff is spectacular. mother nature at its best. no reports of injuries or fatalities from this particular volcano. let's talk about why this occurs, this natural phenomenon. it's fascinating to think that we can get lightning within volcanos. but here is the reason why. that eruption calm coming up from the caldera of the volcano shooting up 20 kilometers into

the air. that's roughly 65,000 feet. and what that does is it carries debris. the rock and the ash was dormant within that volcano for so many years, right into the atmosphere. it creates a friction between those, the debris. that would be the rock and the ash and eventually charges those particular particles. basically that creates the separation of charges in the atmosphere. think of it like static electricity. you shuffle along the carpet and touch the doorknob and you get a shock, same thing happening here. that separation or charge creates that static electricity and you see ta beautiful display within the volcanic eruption that occurred in chile. what a spectacular sight. nasa saw this spectacular image of the volcano on one of its space satellites. and this is actually a satellite that we monitor weather conditions. that deep shading of red shows

just how high that volcanic action into the atmosphere. that's indicating volcanic atmosphere. we're at 40,000 to 50,000 feet. the other thing that was interesting to note is that it created what is called a mesopheric gravity wave. we saw this explosion just so intense that it created this ripple effect. you can see right on this satellite image in southern chile. what an awesome phenomenon. george, i don't know if you've ever seen anything like this before, but illustrate dumped about 60 centimeters. covering this, it's very dangerous with the buildings there, as well. it can be a weight problem. >> thank you so much. friday marks the 25 years since the hubble space telescope launched into space and since then, it's captured images of planet, stars and distant galaxies. a nasa scientist helps us

understand the spectacular view. >> and liftoff of the space with the hubble space telescope. >> we scientists say that rubble has changed the textbooks because it has given us a spectacular understanding of the universe as a whole and of our place as citizens on mannette earth in that magnificent universe. when hubble was first launched back in 1990, the anticipation was great. we were looking forward to these first pristine images from space. but those first initial images actually were disappointing. they were a little bit blurry. and it turns out there was an error in the way the mirror was ground and constructed on the telescope. this was a huge disappointment in 199 the. it proved astronauts went into hubble, put in corrective optics and ever since then, we've had fantastic images from hubble.

things that have blown our minds. hubble has a whole array of images that people around the world love. i think some of the favorite images people know about are the eagle member ewe la, iconic pillars before new cars are continuing to form. hubble has taken spectacular images of planet necessary our own solar system, including jupiter and its moons. one of my favorites is the butterfly deb ewe la. you can see what happens to an aging star 80s starts to become unstable and starts to release its outer atmosphere. in this case a spectacular way. there are beautiful images like the cat's eye nebulae, which is another older star releasing its outer atmosphere and images of other galaxies that take your breath away. these are run regions that contains hundreds of thousands

of stars. hubble has become an appreciated tool to help is see the marvelous things in the universe to keep our own lives in perspecti perspective. the telecope is like a time machine. we can use it to see very distant in both space and time and understand how the universe and the galaxies within it have changed over time. so we're using hubble in many innovative ways to understand the universe and its mysteries all around us. >> such fascinating images. and such a big universe out there. use you watching "cnn newsroom." i'm george howell. the news continues next hour with natalie. stay with us. this is cnn, the world's news leader.

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