ahead this hour, the race for the democratic party nomination tightens. also the whistle-blower mystery. joe biden reacts, slamming president trump and calling allegations against his family a smear campaign. israel's political stalemate. the president holds talks with top political leaders today. live to jerusalem with the latest on that. from cnn world headquarters in atlanta, welcome to our viewers in the u.s. and around the world. i'm natalie allen, and this is

cnn "newsroom". thanks again for joining us. there is a new leader in the race for the democratic nomination in the critical early voting state of iowa. a brand-new cnn/des moines register poll shows elizabeth warren has surged there, right past joe biden. 22% of iowa caucusgoers say they back senator warren, while 20% back former vice president biden. keep in mind the two points between them is within the four-point margin of error. meaning it's anyone's race right now. >> voters got to hear from the candidates firsthand saturday at an event called the iowa state fry. jessica dean has that. >> reporter: 17 candidates, 10,500 steaks at the steak fry. hear to listen to all the candidates and really see who

might sit with them. in the midst of heavy rain here at the end. we have new cnn/des moines register polling showing a tightening the race. they are essentially in a dead heat. we see the tightening race right at the top. we heard from senator cory booker today. he was making a plea to his supporters. he needs $1.7 million before september 30th to find a viable path forward in this race. so he was really calling out to his supporters saying if they want to continue to have him in this race, he needs that money to continue forward. we will see what the rest of the month brings for senator booker. back here in iowa, again, people really engaged as that polling beared out. they are looking for someone that aligns with their values. more than anything, they are looking for someone who they believe can defeat donald trump in 2020. jessica dean, cnn, des moines,

iowa. as he campaigns in iowa, joe biden is defending his family and demanding an investigation into u.s. president donald trump. he is seething after reports the president tried to pressure ukraine into digging up dirt on biden's son hunter. here was the former vice president on saturday. >> trump deserves to be investigated. he is voigting every basic norm of a president. you should be asking him the question, why is he on the phone with a foreign leader, trying to intimidate a foreign leader if that's what happens. that appears that's what happened. you should be looking at trump. trump is doing this because he knows i will beat him like a drum. and he is using the abuse of power and every element of the presidency to try to do something to smear me. >> the trump team has suggested biden used his position as vice president to shield his son from an investigation involving a

ukrainian energy company. to be clear, there is no evidence of that, and the allegations have been discredited. reports that the u.s. stepped from a whistle-blower complaint in the u.s. the inspector general for the u.s. intelligence community deemed it credible and urgent. the president tried to dismiss it as a witch-hunt. >> reporter: president donald trump is striking out at this whistle-blower complaint that he is now facing. and the president is turning to a very familiar playbook, the same he used when he was faced with the investigation by special counsel robert mueller. that investigation of course the president referred to as the russia witch-hunt. now, as he faces this whistle-blower complaint, he's

calling it the ukraine witch-hunt, insisting it is being fueled by the media, being fueled by democrats. and he is also going after the credibility of the complainants. he said he doesn't know the identity of the complainant, he is insisting this is a political hack job calling the whistle blower partisan, even though he has no evidence to back that claim up. it flies in the face that the inspector general, who was appointed by the president, confirmed by the senate, has given credibility to these allegations by disagreeing directly with the acting director of national intelligence's decision not to share that complaint with congress, writing in a letter to congressional leaders that he does feel this complaint matches that urgent notification threshold. this issue, though, is sure not to go away this week. the acting director of national intelligence is set to testify on capitol hill later this week. and the president himself will be meeting with the ukrainian president on the sidelines of the general assembly. at the white house, jeremy diamond, cnn.

ukraine's foreign minister is defending mr. trump's call with the ukrainian president, but he isn't saying it didn't involve the bidens. here's some of what he told local media. i know what the conversation was about and i think there was no pressure. he went on, there was talk, leaders have the right to discuss any problems that exist. this conversation was long, friendly, and it touched on a lot of questions, sometimes requiring serious answers. for more, cnn's matthew chance joins me live from the ukrainian capital of kiev. matthew, what have we gleaned from these comments by ukraine? >> reporter: well, these were comments made to a local media organization by the foreign minister, as you said. actually, i'm standing at the presidential administration compound in kkiev.

we have been trying to get some official comment from anyone close to the president, from the president himself, president zelensky. they are still hammering out their strategy about how they are they are going to handle this. the extent to which the foreign minister was speaking on behalf of the presidential office. but i can tell you this, this is they are absolutely mortified in this building behind me at the idea that ukraine has once again been dragged into the toxic environment of u.s. politics. because the united states for ukraine, remember, is the single-most important strategic ally that the country has. kiev depends on washington not just for diplomatic support in its ongoing battle with the russians over russian-backed rebels in eastern ukraine and the annexation of crimea, but for military aid, for financial aid, and for other areas of assistance. and so they absolutely do not

want to say anything that's going to jeopardize their relationship with president trump, the incumbent u.s. president. but they are mindful of the fact that there is an election in 2020 in the u.s. they have to move forward in the years ahead with whatever administration moves forward. whether it's president trump or joe biden, which is a possibility. it has left them paralyzed and walking a tightrope about how they should handle this latest controversy. >> yes. about that paralysis that you mentioned, what does that mean perhaps for the ukrainian president still set to meet with president trump at the u.n. next week? do you expect that will happen? >> reporter: well, i mean, it is still meant to be happening. you have to remember since his inauguration in may, the president here in kiev has been lobbying hard to get a face-to-face meeting with president trump.

it's been on and off a number of times. they finally got some face time with the u.s. president on the sidelines of the u.n. general assembly next week. but, you know, it is going to be overshadowed at the moment by this scandal. and that's something that the ukrainians are i think probably very upset about. . >> all right. thank you so much. cnn's matthew chance following the story from kiev. we appreciate it. let's talk more about it now with amy pope. she joins me from london. she is an associate mellow at chatham house and former deputy security adviser at the white house. amy, good to see you. thanks for coming in. what do you make of the measured responses we heard from ukraine to local news and our matthew chance saying it is impossible to get official comments from ukraine at this time. what kind of situation could you imagine ukraine is in with this? >> well, i don't really think it is fair to be putting the ukrainian president or their

government into this position, frankly. especially because there are transcripts of their conversations. there are people who heard and witnessed the conversations. there are answers to this that don't involve them. they are in a no-win situation. they can't put themselves into the u.s. domestic politics. that doesn't end well for them. they do in fact, rely on support from the united states. and as we know, russia has been an aggressor in ukraine in the past, and they have not taken their eyes off ukraine. so ukraine needs to leave this within the united states and i think walk the line they have been walking. >> well, while in the u.s., questions continue to swirl around whether a sitting president, mr. trump, asked a foreign government, ukraine, to investigate a presidential candidate. if proven, what could that mean to mr. trump? biden says it's an overwhelming abuse of power. elizabeth warren brought up impeachment again. >> it is very damaging if this is true. this is once again president

trump putting his own personal political interests ahead of national security interests. we all know why ukraine is of importance strategic there i to the united states. and so to put them into a compromised position by not giving them the aid if they don't go and investigate another political candidate, that's incredibly dangerous and reckless in terms of national security issues. but it also demonstrates that the president is willing to push the envelope. the campaign finance laws that are at issue here are of concern, in addition to our national security. and this president has not demonstrated that he understands and appreciates the law. >> well, let's stay on the campaign trail. the democratic candidates have been in iowa. the first test in the nation. elizabeth warren has come out on top in our latest poll. biden hanging in at second. what seems to be resonating with warren with her message, do you think? >> it's hard to tell.

this is a question of whether this is the populism we have seen already playing out in the united states. what we have seen is that president trump came, built his campaign around populism. but in real life, his populism was more for the most wealthy than it was for the people. so now you see elizabeth warren bringing a variation of that message to the campaign. and we'll see how how it resonates. in its early days, this is one state. there are still 12, 13 months to go. so it's hard to extrapolate too much from it at this point. . >> that's true. historically, mr. biden has not done that well in iowa in previous campaigns. he does seem to get more focus when he talks about president trump. case in point, this weekend he said he would beat him like a drum in the election. but do you think at all mr. trump's allegations against biden and his son with the ukraine situation could hurt biden? >> well, there's absolutely no evidence for it. so that's what's interesting here. you have the president, who

could very quickly clear up allegations about his own wrongdoing by releasing transcripts, by allowing people to testify before the relevant committees of congress. but instead of taking the most straightforward route to ending this problem, he tries to shift blame onto his own counterparts in the election. so i think this is once again a situation where you have the president of the united states failing to do the right thing on behalf of the american people and on behalf of our national security to advance his own political interests. >> we appreciate your insights. chatham house associate fellow amy pope. thank you, amy. >> thank you. iran insists it did not attack saudi oil facilities last week. saudi arabia is holding them responsible and suggests it could amount to an act of war. we'll talk more about this developing story in a moment. plus, the sight for a better life ends in tragedy. hundreds demand answers and

changes after a north korean defector dies in the south with her young son. usaa took care of her car rental, and getting her car towed. all i had to take care of was making sure that my daughter was ok. if i met another veteran, and they were with another insurance company, i would tell them, you need to join usaa because they have better rates, and better service. we're the gomez family... we're the rivera family... we're the kirby family, and we are usaa members for life. get your auto insurance quote today. see? romance isn't dead! but it is here. thanks, captain obvious. don't hate-like their trip, book yours with hotels.com and get rewarded basically everywhere. why are you here? why are you here? why are either of you here?! hotels.com. be there. do that. get rewarded.

>> riyadh said it could consider it an act of war if they were launched from iranian soil.

tehran denies any involvement. the saudi minister of state of foreign affairs isn't buying that. he tells cnn iran has become more aggressive. >> united states is sending a few hundred trips, missile batteries. is that enough to guarantee 100% protection for vulnerable sites? . >> the united states and saudi arabia are close allies when it comes to defense relationship. and i believe the united states sending equipment now, the details of this are really with our minister of defense. but i believe that the situation will be assessed on the continual basis and adjustments made when needed. >> iran seems to detect that saudi arabia is in a weak position. the foreign minister there zarif said in effect that saudi arabia was willing to fight iran down to the last u.s. soldier. that implies he thinks you can't stand up to them. . >> no. it confirms that he said many outrage kwrous and outlandish things and laughable things.

saudi arabia and the united states have been allies 80 years. we have fought many wars together. w 6th spilled blood, your blood and our blood together. have i been always carries its weight. saudi arabia is not reckless when it comes to wars. wars are a last resort. >> zarif said iran isn't responsible for the attack, that he is willing to talk to saudi arabia. what do you say to him? >> he and other iranian officials have said a lot of things that are frankly not correct, if not outright lies. to say they are not responsible for this or didn't do it is outrageous. >> but if they are they are saying that, potentially they could do this again. what happens then? >> with regard to what they're saying, either mr. zarif is not telling the truth or he's not aware of what his government is doing, the other side of his government are doing. >> what do you think?

do you think they are split? >> we know there is part of the iranian government that projects an image of wanting to talk to the world, but they don't seem to have influence. and there is another part of the government that wants to expand the revolution and take over the region. and they don't want to talk. it is like a two faces of the same coin. from our perspective -- >> yeah. from your assessment, who is winning that at the moment in iran? >> i can't establish this for a fact. but what we have seen is that iran's aggressive behavior has increased, not decreased. iran's energy supplies have increased not decreased. >> hard line is on the rise? >> it appears so. >> so what do you want iran to do now? and if their politicians are in new york this week, what can they do? >> we want iran to behave like a normal nation. we want them to stop being a revolution and be a member state. we want them to stop interfering in the affairs of other

countries and stop providing ballistic missiles to terrorist groups. and we want them to make sure they are never in a position to acquire a nuclear weapon. we want to have good relations. we want to trade with them. but we can't do this is if all we get is death and destruction. 40 years we have tried to extend our hand in friendship to the eyeiranians iranians. all we get is death and destruction. >> president rouhani, foreign minister zarif will be new york. what value do they have if they don't represent the country? >> i think the iranians need to hear a firm message from the international community that this behavior is not acceptable and this behavior must stop. >> they have heard that message before? haven't they? they have heard that very loudly? >> they need to hear it more and there needs to be action. appeasement does not work. for example, trying to set up a parallel financial payment system is appeasement. trying to give them a line of credit is appeasement. it just 'em boldens them.

they have to know there will be consequences to their actions. >> the message has been behavior and changes to iran. the united states pulling out of the jcpoa, joint nuclear deal, to try to get a better deal, try to get a control of ballistic missiles, to try to get a timeline. has that blown up and backfired? what we have seen is the hard liners are on the rise and more aggressive behavior. and you're suffering for it. >> iran is feeling the pressure of the sanctions, no doubt. >> but you're feeling the heat of that pressure. this attack on your country, if you're right, that iran did this, you're feeling the heat of that pressure. >> yeah. but we do not engage in appeasement. we will do whatever it takes to protect our country and our citizens and our residents and our facilities. and we will work with our allies to ensure that this happens. >> are we on the threshold of a military response, do you believe? >> we don't want war. the u.s. doesn't war. but it is really up to the iranians if they keep continuing along this path, then they risk the possibility of military

action. but nobody wants war. everybody wants to resolve this peacefully. and the end result has to be an end to iran's aggressive policies. >> i don't see the difference at the moment, if you don't mind me saying, of iran producing these weapons. and then waiting for an investigation to find out where they were fired from. because surely it all amounts to the same thing, that you will come to the same point. are you playing for time by saying we are investigating right now when you perhaps have a very strong inclination? >> we hold iran responsible because the missiles and drones that were fired were from yemen where iranian built, iranian-delivered missile. so we hold them responsible. to launch an tack from your territory, if that is the case, puts us in a different category. >> what's the different category? >> this would be considered an act of war.

meantime, iran is pushing back against u.s. pressure after washington said it would send more troops to saudi arabia to help defend it. at a ceremony in tehran marking the start of iran's war with iraq, iranian president hassan rouhani warned foreign troops in the gulf can destabilize the region. >> we announce to the world that the presence of foreign forces can be problematic and dangerous for the region. for international waterways, for maritime security, for oil and energy security. but our path and our way is creating unity in coordination with the region's countries. >> mr. rouhani is said to take part in the u.n. general assembly this week in new york. he said iran would inform the assembly of a plan to secure the gulf with the help of other nations. >> well, radio it now we'right will take you to hong kong.

crowds of pro-democracy protesters dragging a chinese flag on the floor of a shopping mall, possibly spraying paint on it, dragging it around some more, stomping on it. this happened earlier as hundreds of protesters crowded in the center of a shopping mall causing disruptions for stores they claim are pro-beijing. police have apparently cleared out the mall and most of the crowds. although some masked demonstrators are still there. this is the scene right now inside the entrance to a public transportation station. vandals have been overturning trash cans and ripping down signs. sticky notes formed a swastika on the floor. we will continue to bring you developments on cnn as we follow this there in hong kong. a mother risked everything to escape the poverty of north korea, dreaming of a better life in south korea. but earlier this year, she and

her young son were found dead. reportedly they starved to death. paula hancocks has our story. >> reporter: they are believed to have starved to death in a land of plenty. a north korea defector and 6-year-old son are remembered by hundreds who never met them. on saturday in seoul, they marched, demanding an apology from the government. eventually violence erupted. they fled the brutality of north korea in 2007. years later, she left her husband looking for sanctuary with her son in seoul, but they never found it. in july, police found the body of her and her son in the home with no food in the house. the officer said he suspected starvation. he helped her come to south korea from china. she called him to ask for his help in securing monthly financial support from the

government. >> translator: she went to the welfare office but was denied help because she didn't have her divorce papers. >> reporter: he said her ex-husband would never help her get her papers. he says she then hung up, and that was the last time he heard from her. kim said he thought of his decision to rescue her. >> translator: why did i bring her here from her farm? even in rural china you don't die of starvation. >> reporter: she knew her story because it could just have easily been her story. she fled the north. she was sold to a chinese farmer, eventually escaping to the south to raise her son alone. had i decided to go for a job, i couldn't go the a child interviews with a child on my pack. they told me if i went, the welfare office said if i sent my child to day care, the welfare support would be cut off the

same day. the welfare office told cnn there's no record of her speaking welfare support, though they do have a record of her visit last year. they admit there are blind spots in the defector welfare system, which they are working on. for this mother and child, it's too late. paula hancocks, cnn, seoul. next here, we take you live to jerusalem as the question remains who gets to decide who forms israel's next government following an election.

t-mobile's newest signal reaches farther than ever before. with more engineers. more towers. more coverage! it's a network that gives you ♪freedom from big cities, to small towns, we're with you. because life can take you almost anywhere,

t-mobile is with you. no signal goes farther or is more reliable in keeping you connected.

welcome back to our viewers in the u.s. and around the

world. this is cnn "newsroom". i'm natalie allen. here are our headlines this hour. saudi arabia said it would consider the attack on its oil facilities last week an act of war if an international investigation finds the strikes were launched from iran. a saudi diplomat says iran's behavior has been more aggressive. tehran denies it was behind the attack. >> hong kong protesters are apparently setting up barricades inside a shopping mall. we are watching this story unfold very closely. this after police earlier cleared out hundreds of people demonstrating there. the crowds were causing disruptions for businesses. t they trampled chinese flags. other protests on streets across the city. we will keep an eye on these developments. the 16th weekend people have been protesting.

u.s. senator elizabeth warren is challenging joe biden's dominance in a new cnn poll. 22% of iowa caucusgoers plan to back warren, compared to 20% for biden. they are a key stop in the candidates's road to the general election. the president of israel has a lot on his plate. in the coming hours, he is set to launch talks with all the political parties elected to israel's parliament to try and form a government. our sam kylie is standing by in jerusalem for us. that might be easier said than done there, sam. >> reporter: a lot easier, natalie. this is just the very first beginnings at 5:00 today, mr. rivlen will first see benjamin netanyahu, interim minister, if you would like. he has been in this cycle of politics since he failed to form

a coalition back in april. now we have had another round of elections. the elections are showing with almost every vote counted that neither the likud party or the one led by benny gantz can put together a majority bloc. we have gantz on 57 seats. that is the target. and liberman has 8. he is eye dee logically closer to mr. netanyahu. but his instincts tend toward the center left of mr. gantz. in either case, what mr. rivlen will be doing is figure out who is most likely to put together a functioning government. it is not automatically the man who is leading the leading party, if you would like. key to mr. gantz's future also

will be the joint list. they have 13 seats. and it's very problematic for them to incorporate or to be incorporated in a formal coalition because that could drive away mr. liberman. lots of fine-tuning and horse trading and mr. rivlin will have to listen and go through the a arithmetic and find out whether israel can get a government to function. . >> it is complicated. it doesn't seem like there is a solution in sight. how is this going over with the israeli people? >> the israelis are very used to this. there is a degree of frustration. but not the level i have to say that outsiders might have attributed to the israelis. for example, in the second round of elections this year, one might have imagined a bit of election fatigue. the turnout was up by 1.5%, particularly in the arab sector.

israelis arabs make up 20% of the population here. they may well have been galvanized, and a lot of them said they were, by what was described as racist approaches taken by mr. netanyahu, raising the "spectre" of a large arab turnout, much as he did back in april of this year. that may have meant the extra turnout came in part from the arab community. but there is still a great deal of interest, a great deal of the agonizing over this and the agonizing process people went into when they were about to cast their votes. it could start to define the next 50 years of israel's future. it really is boiling down particularly from mr. liberman's perspective as a fight between a secular zionist future on the one hand he would argue, and the other one that continues to be dominated, in his view, by a right-ring bloc that relies very heavily on some ultra

conservative, ultra religious elements. that is one of the schisms in this democracy. >> very interesting. glad you're here to describe it and not me. sam kylie. sam, thank you very much. >> all right. the homeless problem in california continues to grow with no end in sight. >> it means it can happen to anybody. >> it can happen to anybody. it's not someone else's problem. it's a problem we all could face. >> we will tell you about president trump plan to clear out the homeless and why those affected by it are not all on board. also ahead here, the kids are all right. how young people around the world are demanding action on climate change and going head to head with world leaders.

i didn't have to call 911.help. and i didn't have to come get you. because you didn't have another heart attack. not today. you took our conversation about your chronic coronary artery disease to heart. even with a stent procedure, your condition can get worse over time, and keep you at risk of blood clots. so you added xarelto®, to help keep you protected. xarelto®, when taken with low-dose aspirin, is proven to further reduce the risk of blood clots that can cause heart attack, stroke, or cardiovascular death in people with chronic cad. that's because while aspirin can help, it may not be enough to manage your risk of blood clots. in a clinical trial, almost 96% of people taking xarelto® did not have a cardiovascular event. don't stop taking xarelto® without talking to your doctor, as this may increase your risk of heart attack, stroke, or cardiovascular death. while taking, a spinal injection increases the risk of blood clots which may cause paralysis- the inability to move. you may bruise more easily, or take longer for bleeding to stop. xarelto® can cause serious, and in rare cases, fatal bleeding. it may increase your risk of bleeding if you take certain medicines. get help right away for unexpected bleeding

or unusual bruising. do not take xarelto® if you have an artificial heart valve or abnormal bleeding. before starting, tell your doctor about all planned medical or dental procedures and any kidney or liver problems. enjoy every moment-and help protect yourself from an unexpected one, like a cardiovascular event. are you doing enough? ask your doctor if it's time for xarelto®. to learn more about cost and how janssen can help, visit xarelto.com. our because of smoking.ital. but we still had to have a cigarette. had to. but then, we were like. what are we doing? the nicodermcq patch helps prevent your urge to smoke all day. nicodermcq. you know why, we know how.

already. for the third time this hour, we are taking back live to hong kong. this again another protest, the 16th straight weekend of these in hong kong. this is the scene inside the entrance to a public transportation station connected to a mall. police have apparently cleared out most of the crowds. it happened just recently. although some masked demonstrators are still there. vandals, as you can see, have been overturning trash cans and ripping down signs. sticky notes on the floor formed a swastika. you will see that in just a moment as the camera pans, i believe to the left. earlier, some demonstrators trampled a chinese flag. other protests are happening in train stations and streets

across the city. stay with cnn as we continue to bring you developments in the hours ahead. well, the homeless crisis in the state of california has president trump reportedly calling for a roundup of homeless living in tent cities and placing them in a federal building for shelter. but not everyone on the streets is willing to go along with that plan. our dan simon talked with some people who live on the streets. >> reporter: ever eupbs he was a young boy in texas, shawn pleasant has had promise. a valedictorian he got into harvard, chose yellow, majoring in economics. wall street beckoned. then came his own business. >> i own all my choices and decisions, good and bad. >> reporter: today he is homeless living on the streets of los angeles. >> it means it can happen to anybody. >> it can happen to anybody. it's i problem we all could face >> reporter: amid squabbles with

his co-founders, the income dried up. then he lost his rock, his mother. and the problems got worse. he is one of 60,000 homeless in the city of los angeles. >> you will find musicians. the photographer over there. the problem is when the cost of housing. >> reporter: they all life in a small tent city in korea yo town neighborhood, dwarfed by gentrification that has taken over the area. a quarter of the homeless now live in california from l.a.'s skid row to the streets of san francisco. drug needles litter the sidewalks, and crews are routinely dispatched to clean up human waste. near blocks away from some of the biggest tech companies in the world. . >> what they are doing to our beautiful california is a disgrace to our country. >> reporter: president trump may be on the verge of a major crackdown. according to the "washington post", he is considering a directive to have the tent swept up. with the homeless moved to an unused government building. critics point out such action

would not only be illegal but counterproducti counterproductive. >> the idea that we are going to force people into a facility that is probably located in a reremote area is not a solution. >> reporter: mike dickerson cofounded an advocacy group. he said a better solution is figure out how to provide more affordable housing and connecting people to jobs. >> it is not an issue of compassion but more we need to get the tents off the street. >> how would it strike you if all of this stuff was kind of removed? you folks were taken to some other place? >> then i would loaf that other place immediately. . >> shawn, 52 years old and married to another homeless man, doesn't want to be confined by the rules of a shelter. >> you stretch your body. >> exactly. >> this is where you sleep? >> he has a laptop and cell phone. he has been occupying this space for six years and has been homeless for a decade. he admits to being a regular

meth user. he still possesses the intellectual curiosity that took him to the ivy league. >> i would prefer to be somewhere where i can still go to the library when i want to and go and do the things i need to do. >> but then there's the reality of life on the streets. >> every time you sleep, that's when you lose. that's when people come and take your things. i'm a heavy sleeper. i lose a lot. >> a sad story. dan simon our reporter there. in june, mr. trump signed an executive order which created a new council to explore ways to make housing cheaper by changing laws and regulations. >> next here, an overheating earth. activists all fired up to do something about it from all corners of this earth. with the leader of the free world, president trump, he is skipping the next climate summit. we take a closer look at the situation next. thanks, captain obvious. don't hate-like their trip, book yours with hotels.com and get rewarded basically everywhere.

hotels.com. be there. do that. get rewarded. you don't let a cold ruin your day. you take dayquil severe liquicaps and crush it. dayquil severe. the daytime, coughing, aching, stuffy-head, fever, sore throat, power through your day, medicine.

to find out, olay faced the world.better than olay? we tested our vitamin b3 formula and beat japan's top moisturizers. south korea's most innovative. and even the $400 french cream. olay regenerist faced 131 premium products in 12 countries, over 10 years. olay's hydration was unbeaten every time. olay. face anything. but we're also a company that controls hiv, fights cancer, repairs shattered bones,

relieves depression, restores heart rhythms, helps you back from strokes, and keeps you healthy your whole life. from the day you're born we never stop taking care of you. from the day you're born they give us excellent customer otservice, every time.e. our 18 year old was in an accident. usaa took care of her car rental, and getting her car towed. all i had to take care of was making sure that my daughter was ok. if i met another veteran, and they were with another insurance company, i would tell them, you need to join usaa because they have better rates, and better service. we're the gomez family... we're the rivera family... we're the kirby family, and we are usaa members for life. get your auto insurance quote today.

the climate crisis will be at the top of the agenda when the u.n. general assembly's new session kicks off monday. they have already heard from a panel of youth who are urging

world leaders to find solutions for the overheating earth. swedish activist greta thunberg described what they have been doing. >> yesterday millions of people across the globe marched and demanded real climate action, especially young people. we showed that we are united and that we young people are unstoppable. >> some 60 countries are expected to make new commitments at a high-level summit on climate change. but the leader of the world's biggest economy won't be there. u.s. president trump is skipping the climate gathering to lead his own session on religious persecution. again, as we just heard from greta there, there is a day after the massive climate change protests we saw around the world led by young people who have the

most to lose if the world keeps heating up. the children. our bill weir has more about it. >> reporter: with crowds big enough to choke world capitals. >> we need to do this now. >> reporter: and more intimate protest and countless places in between, millions rallied for mother nature. and again the human nature that's making her sick. it will go down as the biggest one-day environmental protest in history. leading the way, the smallest among them. >> i'm so amazed about how many youth came out. it is so empowering. >> reporte >> this is the biggest climate strike ever in history. and we will not just stand aside and watch.

we are united behind the science, and we will do everything in our power to stop this crisis from getting worse. >> reporter: it was about a year ago when swedish teen greta thunberg turned her depression over the climate action, shaming every grownup who would listen. it was lonely at first. but not any more. >> seeing her has really empowered me and made me know what i had to do to fight the climate crisis. >> i am from sweden. >> reporter: the teen activists were on capitol hill this week. >> that is shameful and that is cowardly. and there is no excuse to not take action. >> it only fired you up more. it fueled more of this. >> it did fuel up more of this. and i saw after the testimony i got so much amazing response on social media. and more people turned out to the strike because of it.

they were telling me i saw your testimoni testimoniy and i'm going to com to strike. it is amazing to be able to turn a situation of frustration into one of hope and action. >> reporter: but the day drew more than just children. >> nice to meet you all. >> reporter: william riley was the head of the epa under the first president bush, worked for nixon when public support for the environment was bipartisan. but he worries those days are gone. >> the prospect that it's already too late to avoid 2% to 3% centigrade increase is undeniable. i think that's going to happen. >> there's no debating it was big. but when it comes to changing laws and human habits, was it big enough? the young organizers would say it is way too early" to tell. >>er w not just some young people skipping school or some

adults who are not going to work. we are a wave of change. >> reporter: they vow that this is just the beginning. bill weir, cnn, new york. it was powerful. and her words are powerful. let's talk more about it with the grantham research institute from london. good morning. i want to ask you first up the movement we saw on friday, all of these young people and some adults taking to the streets, millions worldwide. the question is is it enough to make change, this galvanizing moment? >> good morning. i agree with greta and her amazing colleagues and everyone around the world who is saying it is too early to know. what we do see is over the nine months since the climate strikes have begun, we have seen this growing and rising to the top of

world agendas. if the u.n. secretary-general in the summit starting tomorrow will not allow on the podium countries that are opening new coal-fired power plants, then this is a change. if 87 of the world's largest companies sign today to a commitment to reduce their emissions to net zero by 2050, including along all of their value chains, we are seeing progress. if investors who are holding about half of the world's publicly traded wealth are committing to investing along 1.5 degree trajectory, we are seeing change. >> so you expect that to happen? >> those are things that have already happened. >> okay. >> these are things that have already happened. today the companies have announced. >> great. >> the investors signed the investor agenda. this already happened. the fact that we are speaking about this at the top of every news hour is making a difference. >> i hope so. china, u.s., europe. the shraoeding smog producers.

the u.s. president is skipping the summit. he is working to block california from cleaning up its air. it seems to be president trump versus clean air in the state of california. he has rolled back all kinds of environmental protections. is his reluctance to act, though, a threat to stave off this climate change? can the world go it without president trump? >> i think it's pretty remarkable now that when we think about how leaders are working against their own citizens and working against what is obviously one of the greatest -- or fighting one of the greatest threats society has ever faced, it is pretty remarkable. there are great powers at play that leave some hope here. there is an economic tipping point right now because renewable energy is becoming cheaper all over the world. and if trump is continuing to

rely on his friends in the fossil fuel industry who he is subsidizing at a outrageous level, i would say, i think it is no shorter than outrage, this is on the way to ending. because it doesn't make economic sense any more to do this. and i think greater forces around the world are understanding this is hopeful live only a matter of time until this is reversed 6789. >> we hope so. we so appreciate your expertise on this. we will definitely talk with you again hopefully after the u.n. summit. doctor, thank you so much for joining us. >> gladly. we want to take you back to hong kong. this is a live video. just want to make sure. moments ago. the 16th straight weekend of w protests. this is the latest example of the violence we have seen.

fires started in the street, strewn with trash cans and other barricades. people at a shopping mall were seen smashing displays, overturning trash cans and ripping down signs. even sticky notes formed a swastika on the floor as they continue to fight for democracy. also some demonstrators trampled a chinese flag. as you can see right here, they take their furor to the streets. many people showing they are not going to let up to put the pressure on hong kong for change. we'll continue to follow it. for u.s. viewers, "new day" is next. and i'll have the headlines for everyone else.

♪ work so hard ♪ give it everything you got ♪ strength of a lioness ♪ tough as a knot ♪ rocking the stage ♪ and we never gonna stop ♪ all strength, no sweat. ♪ just in case you forgot ♪ all strength. ♪ no sweat secret. all strength. no sweat. what might seem like a small cough can be a big bad problem for your grandchildren. babies too young to be vaccinated against whooping cough are the most at risk for severe illness. help prevent this!

talk to your doctor or pharmacist today about getting vaccinated against whooping cough. talk to your doctor or pharmacist today t-mobile's newest signal reaches farther than ever before. with more engineers. more towers. more coverage! it's a network that gives you ♪freedom from big cities, to small towns, we're with you. because life can take you almost anywhere, t-mobile is with you. no signal goes farther or is more reliable in keeping you connected. here, hello! starts with -hi!mple... how can i help? a data plan for everyone. everyone? everyone. let's send to everyone! [ camera clicking ] wifi up there? -ahhh. sure, why not?

how'd he get out?! a camera might figure it out. that was easy! glad i could help. at xfinity, we're here to make life simple. easy. awesome. so come ask, shop, discover at your xfinity store today. you.