this is cnn breaking news. >> hello and welcome to our viewers around the world and in

the united states this hour. i'm hala gorani live in lviv, ukraine. day 21 of russia's invasion of this country with air raid sirens and a busy night of explosions in the capital, kyiv. the city is under a curfew until thursday morning as russia intensifies its strikes on residential neighborhoods. ukraine's president volodymyr zelenskyy will deliver a virtual address to the u.s. congress in the coming hours. he's expecting to ask for more military aid as well as a no-fly zone over the country, which nato allies have resisted. a source tells cnn the u.s. will announce another $800 million in security assistance. president joe biden traveling to brussels next week to discuss russia's invasion of ukraine with nato leaders is another of the key developments. now despite the fighting in and around kyiv, the prime ministers of poland, slovenia, and the czech republic made their way in

person to the city to meet with president zelenskyy. you're seeing footage of that meeting on tuesday on that screen. they say they wanted to let him know that ukraine is not alone in its fight. >> you are fighting for your lives, your freedom, but we know that you are also fighting for our lives and our freedom. and it's for us very important. >> we are bringing here full support for your future, not only european, but eu membership. >> should be agreed the next couple of days or weeks, and the candidate status should be given at the end of this year at the latest. >> well, meanwhile, outside the safety of that very secretive meeting, russian forces blasted a number of neighborhoods. local officials say at least four people were killed when shells hit this apartment building.

kyiv's mayor vitali klitschko wore a flak jacket as he walked through the streets surveying damage. >> we never leave. this is our homes. we defend our children, our family, our buildings, our city and our future, future of ukraine. >> well, the curfew in kyiv is intended to prevent civilian casualties. people are not allowed to leave their homes without special permission unless they're heading to bomb shelters. authorities in the eastern city of kharkiv say one person was killed in strikes on tuesday. officials reported 65 instances of shelling in one day with 600 residential buildings destroyed. and in another part of the country to the south, the deputy mayor of mariupol says that russian forces are holding doctors and patients against their will at a hospital there. >> the russian army use doctors

and patients as hostages in this building. so we do not have any access to them. and of course it's war crime. >> well, the ukrainians are fighting back farther west in kherson. planet lab says these satellite images show the airport where ukraine's military, it says, has destroyed at least three russian helicopters and a number of vehicles. now people in mykolaiv are desperate to escape as russian forces close in. the port city in southern ukraine is a critical route on russia's advance toward odesa. and now fears are growing that a ground assault on mykolaiv could come at any time. cnn's nick pate tan walsh has our report. >> reporter: this is the road down which russia's war of annihilation may lurch. and its emptiness speaks only of what is to come from

russian-held kherson up here to the final port of mykolaiv. they know what it is to be in russia's way. out of 18 homes, 10 are left in our village, she says. no electricity, gas, water, or heat. the only ones left are those who can't leave, another adds. they're young, edgy, guns raised, unsure who we are. "press" written on our vests and our press cards slowly calms them down, and they apologize. but this is not an army in full control of its destiny. the trenches are where the rockets land every night. some are from odesa, moscow's eventual target here.

others from just down the road. they're saying the house is just over there. it's important to see what tools ukraine has been left with by a world that seems so concerned. they fight for their homes but tell me they captured russians who seemed unaware why they were even here. they said they can't understand what's going on, he said. they can't go back because back there they're being shot for retreating. so they advance or surrender. dust in mykolaiv has sounded this way for weeks. more morale takes different forms. and this is a police chief driving a birthday gift to the governor with a captured russian machine gun soldered on to it. it does not distract from the seriousness of the twilight world in which his colleagues work.

any drunk or man changing his car battery after curfew could be a russian saboteur, they fear. there really is no way to check by looking at phones and in trunks. the city is dark bar their lights, and the flash of a distant enemy's bombs. an urgent hospital call for blood has gone out. they rush to help. the savagery of russia's targeting measurable in how dark this four-floor hospital keeps itself at night. invisible not from a power cut, but to avoid russian bombs. mykolaiv has been fearing encirclement for days. there is heartbreak for those who leave.

amid the shared agony, still a tussle to get on to buses to moldova. the men stay. >> that's my wife and daughter. >> reporter: and she goes to poland? >> she goes to poland. because i have to come back. of course i have to come back. >> what will you do? >> i go -- this my country. this my country, what i must do. no poland, this is my home. >> reporter: and there is heartbreak for those who stay. svetlana lost her husband in a rocket attack sunday that killed nine outside a shop. the violence here is a chain of

moments of blinding grief. pieces left to wander alone. nick paton walsh, cnn, mykolaiv, ukraine. >> the director of the you're ratios democracy initiative joins me now from near kyiv. thanks for being with us. you're staying in the country. you've told our producers you have no intention of leaving. what's morale like right now among ukrainians near the capital? >> well, this is what you heard in the previous segment, i don't want to go to poland. this is my country.

as brutal and as barbaric as the bombardment that ukrainian city has been. there is no question in ukrainians' minds that what they're fighting for. they're fighting for theriault home. they're fighting for their future. they absolutely reject any idea that russia will be imposing its own system, you know. its philosophy of life and governance on ukraine. if there was ever a doubt about ukrainians' identity, about ukrainians willing to live in a liberal democracy, those doubts have disappeared once russian tanks started crossing the ukrainian border on the morning of february 24th. >> but yet you must have some concern for your family's safety. but despite that, and i'm hearing that from many ukrainians, by the way, that we're talking to here in the western part of the country, i guess your position is this is my country, and i have no intention of becoming a refugee. because you're an american ukrainian. so you could legally leave, but you're choosing not to.

>> no, i'm choosing not to. obviously, this is the place to be. right now vladimir putin is trying to -- he said he was trying to impose control over all of ukraine when he talked to president macron and erdogan of turkey. i don't think he has the forces to do that, but he certainly has the forces to keep terrorizing the whole country. it's a calculated risk, obviously. for me to remain in ukraine, but i believe that ukraine shall prevail. i have no doubt in my mind. and there will be a lot of need for folks like me to try to bring it up to speed, to try to start rebuilding. ukraine, to try to bring back the millions of ukrainians that have left. it's estimated that already ukraine has suffered close to $100 billion of damage. much more is expected obviously

as putin escalates his campaign of terror. he is clear that he has suffered significant setbacks on the fields military wise. he has no plan. his only plan is to keep terrorizing civilians to try to bring ukrainians to their knees. >> right. but that's not going to be enough to take over the country, to continue to occupy it. what do you see as a possible offramp for putin's military here? because they're -- where is the potential exit here? if vladimir putin at some point realizes, because some people say he is maybe even a bit delusional about his army's advances in ukraine. but at some point, what if he realizes this is not a fight he can win militarily, where is the diplomatic open door? how do you -- what does that look like potentially? >> well, everyone is

questioning, ask me that question. i think that we will not be able to see that offramp for as long as vladimir putin thinks that he will -- his actions in ukraine will go unpunished. you to be obviously sending the right signals. but mr. zelenskyy, the ukraine president, has already done so. he has declared his willingness to consider neutrality status for ukraine, to consider saying no to nato plans. this is ostensibly vladimir putin's demands, although i don't believe that's the case. it's more of a red herring for vladimir putin, and that is a war of conquest for him. but the ukrainian side is trying to claim the initiative in this process. zelenskyy will be addressing members of congress. so while he is sending these signals diplomatically that he is willing to sit down and actually offer mr. putin an offramp without a muscular show of strength, vladimir putin will not sit down. so we're talking about bolstering ukraine's defenses,

which include possibly providing russian-made surface-to-air missile defense systems since russ ruled out closing the airspace. that's the next step washington must do to help ukraine. >> yeah, certainly. thank you very much, peter zalmayev, joining us from near kyiv. appreciate it. after mr. zelenskyy's speech to congress, the american president is expected to announce another round of assistance to ukraine. this comes as joe biden plans a trip to europe next week to attend a meeting in person of nato leaders, an extraordinary meeting, as well as meeting with european council leader. kaitlan collins has details from washington. >> yeah, president zelenskyy and president biden both expected to give major speeches on wednesday. first ukraine president zelenskyy is going to address the united states congress where we know he is going to thank the united states for the support that they have given to ukraine since russia invaded.

but he is also expected to ask the west for more assistance. and two of his major demands have been to create a no-fly zone over ukraine, and also to send the ukrainian air force more fighter jets. two things that have been firm no's from the white house so far, citing conflicts they believe that could draw the united states into, and the high-risk situation of transferring planes into ukraine as russia is attacking it. of course zelenskyy could ask for other assistance in this speech that he is going to give to congress. and we will hear from president biden later on where he is going to announce $800 million in new assistance to ukraine. that would bring the total in the last week to about a billion dollars in new lethal assistance that the united states has provided to ukraine. obviously they will try to get that in as quickly as possible. we'll still wait for specifics from president biden on what that's going to look like, whether or not it includes those armed drones that zelenskyy and other ukrainian officials have talked about that they need at this time. and of course both of these speeches come as the white house says president biden is preparing to travel to brussels

for an extraordinary meeting with the leaders of nato next thursday on march 24th. that's going to happen before a european council meeting as well, and potentially a trip to poland where of course president biden could come face-to-face with some of the millions of refugees who have fled ukraine. kaitlan collins, cnn, the white house. the russian journalist who was arrested after a dramatic anti-war protest during a live tv show is speaking out about what she endured in police custody. >> translator: those were indeed very difficult days of my life. i literally spent two days with no sleep. the questioning lasted over 14 hours. i wasn't allowed to contact my relatives or friends. i wasn't provided with any legal assistance. so i am in quite a difficult position. >> well, so far she has been spared prison time. instead she was fined 30,000

rubles, a little under $300. but that fine wasn't for breaking on to the tv set. it was for a message she prerecorded before her on-air protest. >> dear russian people, thinking and smart, it is only in our power to zopp all this madness. go to the rallies and do not be afraid. they cannot arrest us all. >> well, her protest on monday came amid a crackdown on anti-war messages in russia. a new law passed earlier this month quite draconian allows up to 15 years in prison for anyone convicted of spreading what the kremlin considers fake news about the invasion. still to come on the program, the refugee crisis only continues to grow as the number of those fleeing ukraine reaches yet another staggering milestone. and while tens of thousands of people flee ukraine each day in search of safety, we'll introduce you to some women who

are headed back into the war zone.

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i'm hala gorani live in lviv, ukraine. the refugee crisis keeps growing by the day. the u.n. says more than three million people have now fled ukraine since the invasion started nearly three weeks ago. poland has taken in the most refugees by far, almost two million as of tuesday. this map shows you the other neighboring countries where ukrainians are fleeing. some of them are going on to third countries. as we've reported, the majority of people leaving are women, children, and the elderly. even as the refugee numbers continue to grow, cnn has found that some women are now heading back to ukraine to lend their support in the fight. here's cnn ed lavandera. >> reporter: the rail line from ukraine ends at platform 5 at the train station in poland. after refugees walk off, this same train will go back. for weeks it's mostly been men returning to join the ukrainian fight against russia.

but in front of the sign reading "train for ukraine," women are waiting hours for a ride back into the war zone. near the front of the line, we found tatiana. she came to poland three days ago to bring her two adult daughters to safety. now the 40-year-old is going home to a town in eastern ukraine near the russian border. "ukraine is equally important for men and women," she says. "we're the real ukrainians. women have the strength and will and heart as well." by our count, women accounted for about half the passengers in this line waiting to cross the border back to ukraine. irina brought her grandchildren to poland. she's returning now to be with her family in odesa. how worried are you about your safety? "i'm anxious," she says. "but the feeling has become dull over time. i just want to be next to my family."

do you feel this is a way of fighting for your country? "of course," she says. "we have all become united during this time, each one doing what we can to help the military. women are doing it as well as men." standing with several women, we met marina, going to kyiv to be with her husband and family to fight, in her words, russian terrorists. >> if you know what you need to do, it's impossible to feel nervous over something like this. i have to do this. i do it for my country, for my relatives, for my friends. >> reporter: and what stands out to me in this line of people going back to ukraine is there are so many women. why do you think that is? >> i'm not man. i can't kill. i'm woman. and my work, keep balance and help and be kind and care about relatives, family, friends, but

now i feel that all ukrainians my relatives. >> reporter: before she leave, maria shows us a heart-shaped ukrainian flag given to her by polish children to protect her. those returning walk past a carriage that says "safety above all." but the train leaving platform 5 disappears into a war zone where safety is a dream. ed lavandera, cnn, poland. well, still ahead, as explosions ring out in kyiv, the city is under a strict curfew aimed at preventing more civilian casualties. our breaking news of the war in ukraine continues after a break.

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welcome back. i'm hala gorani live in lviv, ukraine. our top story this hour, cnn crews in kyiv have reported a busy night of multiple explosions in the capital as air raid sirens blared through the night. the city is now under a strict curfew until thursday morning. the mayor says residents will only be allowed to leave their

homes if they have a special permit, or if they're trying to get to a bomb shelter. meanwhile, the ukraine president volodymyr zelenskyy will address american lawmakers in the coming hours. he's expected to ask them for more help, including additional weapons for ukraine and a no-fly zone, something the u.s. and nato have ruled out. and cnn has learned that the u.s. president joe biden is expected to announce even more security aid after zelenskyy's speech. the white house also announced tuesday that mr. biden will travel to europe next week to meet in person with world leaders and discuss russia's invasion. on tuesday, several european leaders traveled into ukraine, meeting with mr. zelenskyy and reaffirming their support for ukraine's fight. ukraine's president saying their visit sends a powerful message. listen to zelenskyy. >> translator: i would like to

thank you for what you're doing during such a difficult time. your help is greatly appreciated. these ambassadors of beautiful independent european countries have come to ukraine during the full-scale invasion of our country by the russian federation. you do not fear anything. >> well, ukrainian president volodymyr zelenskyy there hosting the european leaders. meanwhile, here in lviv, the city's mayor is also appealing for international aid as the city tries to cope with the influx of people fleeing the war. i spoke with him earlier on how his city is coping. meet the mayor of lviv and ri, if you can keep up with him. and a ukrainian aid organization. we follow him at a fast pace into a waiting van. and it's off to the main lviv train station to check on ukrainians evacuating to poland.

he has five free minutes. so he calls the mayor of besieged mariupol in southeast ukraine. no answer. a quick call to another friend, the mayor of mykolaiv. >> sasha . >> at the station, a lightning visit. handshakes, hellos to some of the people in line for trains to poland, and an update on the situation from volunteers. sadovyi is a wartime mayor now. his city hosting hundreds of thousands of displaced

ukrainians. >> people happy about peace city. >> i think one of the ladies said "i'm happy to be alive," she said. >> yes. >> reporter: we finally catch up with him long enough to ask a few questions on the station platform. not as packed as in the first days of the war with chaotic scenes of ukrainians fleeing the bombing. they have a system to evacuate people now, he tells me. what do you think your responsibility is today? >> it's my responsibility arrive everyone citizens like my mother, my father. >> reporter: you're convinced, you told me earlier that that will end in victory for the ukrainian people? >> i believe in our victory 100%. it is great. >> reporter: you have no doubt? >> no. never give up. only victory. >> reporter: shortly after this station visit, it's on to a

church for the funerals of three of the service members killed in sunday's attack on a training facility in western ukraine not far from his city. mayor sadovyi touches the casket of a fallen soldier while reciting a prayer and bows in gratitude to troops attending the funeral service. but the moment of reflection doesn't last long. an air raid siren goes off outside the church, and the mayor and his staff return to city hall and down to the basement shelter, where they discuss housing for ukrainians displaced by the war. a priority for the mayor of lviv, whose city has already welcomed more than 200,000 people with the expectation that 100,000 more could join them. but there is no time to linger on that thought too long. mayor sadovyi has no time to waste.

>> well, there you have it. the mayor of lviv has become a wartime mayor, practically overnight. back to you, rosemary church in atlanta. >> all right, thank you, hala, for your reporting. we'll get back to you very soon. appreciate it. well, still to come, china isn't taking kindly to threats of u.s. action if beijing gives assistance to russia. we'll analyze moscow's deep ties to beijing, when we return.

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welcome back, everyone. well, beijing says it will continue its economic relationship with russia, despite threats from the united states. on tuesday, a spokesperson for the chinese foreign ministry

said his country shares mutual respect with russia. beijing has come under fire for not denouncing russia's invasion of ukraine, actively pushing back against what officials call attempts to smear its reputation over the matter. u.s. secretary of state antony blinken makes the u.s. stance very clear. >> without going into specifics of what we'll do, we've made very clear that that's not something we're going to take sitting down. >> jamie metzl served on the u.s. national security council and at the state department. he was also the deputy staff director of the u.s. senate committee on foreign relations when it was chaired by then senator joe biden. and he joins me now from new york. jamie metzl, good to have you with us. >> thank you. >> now you and i have talked previously about china's role in russia's war on ukraine, and you said that president xi jinping gave president putin the green

light to go ahead with his invasion. now we've learned that russia has asked china for military and economic assistance, and china is apparently considering doing just that. why would china want to be dragged into putin's deadly and faltering invasion of ukraine? >> it's really difficult to understand, but you can get china seas the united states as its main strategic enemy in the world. and on february 4th, china and russia signed an immigrant of partnership where they said there was no limits to what they would do together in the world. now that is being tested. and if china does end up sending arms to the russians to use in ukraine, that would shift china from an accomplice in the invasion to a full cocombatant. and i hope that the chinese government is taking that possibility very seriously. >> and of course it's worth pointing out china has not yet condemned putin's deadly invasion. but if the country, if china

goes ahead and assists russia, with drones and other military aid, how should nato respond to that? >> certainly we should begin a process of a leading toward a very full economic decoupling with china. we live in a world today where we are seeing there is a significant difference between the way that free and open societies function and the way that authoritarian societies function. and what this crisis has shown us, we in the free world are too reliant on goods or products or trade from the authoritarian world that is going to create a vulnerability not just for us, but for others around the world. china makes the strategic choice to be all in with brutality, with general wide side, with human rights violation, around the world, whether shenzhen, tibet, ukraine, there has to be consequences, and we have to

think about what is the kind of world we'd like to build and who are the partners we'd like to build with it. >> jamie, when you and i spoke last week, you head china's president xi could end this war in ukraine immediately with just one telephone call to president putin. as a result, i received a lot of action to that on social media, as i'm sure you did too, many rejects the possibility that china's leader had that control over putin. what would you say to those who just can't wrap their minds around the possibility that china's leader does have that level of influence over president putin? >> well, first, there is just no possibility that presidents xi and putin sign the february 4th agreement saying there were no limits to their partnership two weeks before the invasion of ukraine and the possibility of an invasion of ukraine wasn't discussed. as a matter of fact, the agreement between china and

russia was the green light that putin needed to know that he could take this aggressive step and china would have its back. if china announced that it no longer had russia's back and was no longer supporting this brutal attack on the people of ukraine, then russia would have absolutely no choice but to withdraw. it's the possibility of future trade with china and future support from china that is giving president putin the ability to move forward. >> yeah, of course the question will be whether president chipresidentchy would ever do that. president biden will attend an extraordinary nato summit on ukraine next thursday in brussels alongside other nato leaders. how significant is this? and what might come out of that meeting? and also, president biden's response to the upcoming address to a joint session of the u.s. congress today of ukraine's president zelenskyy? >> what we are seeing now is a revival of the atlantic

alliance. for many years, people around the world, here in the united states were starting to feel that america was no longer able to stand up for our values. that the atlantic alliance was dying. the european countries didn't stand for anything other than commerce and getting rich. what we're now seeing is that our entire world rests upon a foundation of peace, of democracy, of open societies and innovation. and president biden is taking an important step along with the europeans not just to support president zelenskyy for what he represents in ukraine, but to support president zelenskyy for what he represents for our entire world. this is a battle about freedom. it's about the future of our world. and i think president biden and the leaders of europe and the free world are standing together to say this is a fight we must win and we will win. >> jamie metzl, always a

pleasure to talk with you and get your analysis. many thanks. >> thank you. and still to come, pfizer and biontech are seeking approval for a booster shot. details on why the company says this will reduce the illness. that's next. plus, china changes its tactics to fight covid as the worst outbreaks since wuhan sweeps the country. why officials say it is becoming more difficult to contain the virus. ♪ limu emu and doug.♪ and it's easy to customize your insurance at libertymutual.com soso you only pay for what you need. isn't that right limu? limu? lilimu? sorry, one sec. doug blows several different whistles. doug blows several different whwhistles. [a vulture squawks.] there he is. only pay for what you need. ♪liberty, liberty, liberty, liberty♪ stuff. we love stuff.

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booster dose. of the covid-19 vaccine for older adults. the company say they the submission is based on data from israel. that shows an additional dose lowers rates of infection and severe illness. the studies not being peer reviewed yet. but pfizer says this additional booster didn't result in any new safety concerns. husband of the u.s. vice president second gentleman has tested positive for covid. symptoms are mild though. according to to one of his tweets. which also said he was vaccinated and had received a booster. the positive test result made his wife kamala harris didn't attend a white house event on equal pay tuesday night. even though she tested negative. >> a wave of new covid infections in china. has forced some changes in

beijing pandemic play book. isolation and testing policies will be eased. patients with mild and a symptomatic cases. designed to ease the pressure on the healthcare system. cnn joining me now from beijing. china is changing the way it fights covid. as it struggles with the worst out break since wuhan. what's the latest on that and could we see a departure from the zero covid policy? >> the timing of the release of the updated guidelines is very interesting because the highly contagious nature of omicron. which is rages across china. this is seen by many as the health authorities here are prepared to ease things up somewhat. not only by changing where they are going to put mild cases, but in terms of this discharge criteria. and health monitoring

requirements after the release. on the other hand this has been published at a time when the beijing leadership seems to be doubling down on the zero covid policy. we are again seeing millions of chinese people across the country being placed under some form of lock down. and that applies to shanghai. the biggest city in the country. which up to this point had pride itself on their less disruptive approach to containment. residents are telling us authorities seems to be adopting a so called rolling lock down strategy. they're locking down neighborhoods at a time. sealing off residents to their homes for 48 hours and requiring everyone to under go two rounds of covid testing. and only reopen the neighborhoods when everyone in inside tests negative twice. within two days. and also local officials warning about possible delay in the reopening because of the city's increasingly strained testing capacity. keeping in mind this is

considered the most leent yent form of covid response in the country. the leadership is aware and concerned about the possibility economic impact from the continued harsh policies. the bottom line is they want to ensure absolute social stability before the ruling communist party national congress later this year. when xi jinping of course is expected to take that almost and us precedented third term. paving the way to rule for life. that's the top priority. before that happens everything else seems to be secondary. >> joining us live from beijing. for many people in the united states, setting clocks forward an hour is not just a right of spring. it's the vein of their existence. senators feel that way too. they unanimously passed a measure making daylight saving time permanent. across the united states. now that would put an end to the twice a year time change. in the spring and in the fall. first it has to pass the house

and be signed by president biden to become law. the proposed change would take effect 2023 and clocks would never again have to be adjusted. many will be very happy with that out come. thank you so much for being with us this hour. our breaking news coverage continues after a short break. ♪ ♪ it's electric... made extraordinary. ingenuity... in motion. it listens, learns, adapts and anticipatetes your every need. with intelligence... that feels anything but artitificial. the e eqs from mercedes-benz. it's the car electric has been waiting for.

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are you a christian author with a book that you're ready to share with the world? get published now, call for your free publisher kit today! hello, welcome to our viewers around the world and united states. live from lviv in ukraine. day 21 today of the russia invasion of ukraine. with air raid sirens and a busy night of explosions in the capitol kyiv. just a few minutes ago we learned that russian shelling hit a 12 story residential building not f