tonight, several developing headlines as we come on the air. the capital of ukraine now under a 35-hour curfew. what they're now bracing for in kyiv. and tonight, verified surveillance video showing a powerful blast rocking the second-largest city of kharkiv. the russian military unleashing a barrage of attacks on civilians. deadly air strikes hitting residential areas in kyiv. apartment buildings destroyed. consumed by smoke and flames. more than 3 million refugees now fleeing the country. and the mass exodus under way in mariupol. an estimated 20,000 people escaping through a humanitarian corridor. tonight, 24 hours after learning a fox news correspondent was injured in an attack, the network reporting that one of their photographers and a 24-year-old producer who was

helping them navigate ukraine were both killed when their vhicle was hit by incoming fire in the same incident. ukraine's president zelenskyy set to address the u.s. congress tomorrow. today, appearing before the canadian parliament. what he urgently asked for. tonight, ian pannell taking us deep underground in kyiv. in moscow tonight, what's now happened to the tv producer turned anti-war protester seen by the world, storming the set of that live broadcast on russian state tv? in court today, the punishment. and is this the end of it? martha raddatz in lviv, ukraine, tonight. president biden, we have learned, will now travel to europe to attend a nato summit. and tonight, the white house now responding to president zelenskyy and what he asked for today. and what they're expecting when he addresses congress tomorrow. mary bruce live at the white house. the breaking news as we come on tonight on the pandemic. pfizer has just requested emergency authorization for a second booster. we ask dr. jha tonight about the idea of another booster.

what they're seeing in israeli data on this. also, what's being seen in waste water in the u.s., what could it mean? and what does dr. jha make of the new covid surge in parts of europe? what concerns him most here at home? tonight, the arrest, the suspect wanted for allegedly shooting five homeless men in washington, d.c. and new york city, killing two victims. what authorities are now saying tonight. the big change that could be coming at starbucks. it would affect anyone buying a cup of coffee. and is the u.s. about to stop changing our clocks twice a year? what happened today. good evening and it's great to have you with us here on a tuesday night. and we begin tonight with the war in ukraine and this evening, the capital city of kyiv, where the mayor there has imposed a mandatory 35-hour curfew, saying families should only leave their homes if they are racing to a

bomb shelter. tonight, russia increasing its assault on ukraine, hitting civilian targets. ukraine's president zelenskyy will address the u.s. congress tomorrow. but tonight, he has already addressed canadian parliament, and what he asked for. the white house now responding. tonight, verified video showing new images of deadly attacks. this massive explosion there rocking the second largest city of kharkiv. the city hit dozens of times in just the last 24 hours. attacks intensifying in and around kyiv. deadly russian air strikes pounding civilian areas in the capital. apartment buildings up in flames. tonight, the humanitarian emergency growing. more than 3 million refugees now fleeing ukraine, and today alone, an estimated 20,000 people escaping mariupol. packing into cars to get out through a humanitarian corridor. 24 hours after we learned a fox news correspondent was injured in an attack, we've now learned the fox news photographer and a 24-year-old producer on the ground in ukraine who was

helping them navigate kyiv, they were both killed when their vehicle was hit. it was all the same incident. ukraine's president zelenskyy in that address to canadian parliament today pleading with western nations to enforce a no-fly zone over his country. tonight, the white house responding. and we've also learned president biden will attend an emergency nato summit in brussels next week. and what the white house expects to hear from president zelenskyy when he addresses the u.s. congress tomorrow. abc's senior foreign correspondent ian pannell tonight leading us off from kyiv again this evening. >> reporter: tonight, the full brutality of russia's war on ukraine. this verified video circulating online shows the relentless bombardment of kharkiv. it was one of more than 60 strikes on a city that's refused to surrender since the start of this war. being caught in the open in kharkiv can cost you your life. and the capital kyiv also coming

under increased shelling today. the city awoke to the sound of explosions this morning. plumes of smoke rising after another air strike, captured in this video posted to social media and verified by abc news. at least four people were killed in the pre-dawn attack. another apartment block ablaze. 15 stories high and a frantic effort to reach anyone trapped inside. you can see the extent of the damage. yet another strike into the heart of kyiv. it's not clear whether this was a missile or a rocket, but once again, residential areas, civilian infrastructure is being targeted. incredibly, the number of casualties still seems to be small, but in response, it appears, the mayor of the city is now imposing a citywide curfew. on days like this, the only safe place feels deep underground, where thousands seek shelter in subways.

many of kyiv's metro stations are built hundreds of hundreds of feet under ground. that's because they were designed with nuclear war in mind. that's also why thousands of the city's residents have chosen to move understood underground for their own safety away from the russian bombardment. how do you manage living underground? "it's strange," the man tells me. "we have no idea what's coming next. the worst part is uncertainty. only god knows what will happen next." and in the midst of the war, a bold display of solidarity from european leaders who braved the bombardment to come to kyiv. to show europe's unequivocal support for ukraine. today, a fourth round of talks between russia and ukraine entered a second day. despite optimistic comments that a cease-fire could be struck, negotiators only agreeing to meet again. and a senior u.s. official telling abc there seems little hope for diplomacy at this point in time. in mariupol, amid apocalyptic scenes, officials say 20,000 civilians in some 4,000 cars

were able to flee through a humanitarian corridor in the largest evacuation from the city so far. but an aid convoy carrying desperately needed food, water, and medicine couldn't get to residents who have been without power or heat for well over a week now. putin's invasion has now created more than 3 million refugees in just 20 days. nearly two-thirds have fled to neighboring poland. victor oquendo is at the warsaw expo, now a makeshift city of cots and clinics, even a makeshift bus station, where refugees can board for free transport throughout europe. >> we're inside the largest refugee hub in all of europe. they're currently housing about 8,000 people here, mostly women and children. this is the play area. 1.5 million children have been displaced. that means that since the beginning of the war, a child has become a refugee nearly every second. >> reporter: the war has claimed the lives of hundreds, perhaps thousands, of ukrainians.

tonight, we're learning it's taken the lives of two more people. veteran fox news cameraman pierre zakrzewski and 24-year-old local producer oleksandra kuvshynova who were killed while reporting near kyiv yesterday. despite the risks, fox says kuvshynova was helping crews navigate the city, gathering information and speaking to ukrainian sources. fox news reports the two were working with correspondent benjamin hall when incoming fire hit their vehicle. hall was wounded, but the extent of his injuries hasn't been disclosed. and as the toll of this war grows daily, ukrainian president zelenskyy continuing to rally the world to his side. addressing canada's parliament today, calling again for a no-fly zone and repeatedly asking lawmakers to imagine if what was happening in ukraine was happening there. his speech done, he was met with a three-minute standing ovation. lawmakers shouting ukraine's slogan of defiance, "slava ukraini."

glory to ukraine. >> it was an extraordinary scene. ian pannell joins us again tonight from the ukrainian capital. ian, a powerful address by zelenskyy, asking once again for this no-fly zone. he got that standing ovation, you mentioned three minutes long, but obviously not the no-fly zone. and i gather a very good chance he'll ask for that again tomorrow, when he addresses the u.s. congress via video link? >> reporter: yeah, i think almost certainly, i mean, zelenskyy's been firm that a no-fly zone would act as a deterrent to putin. that's what he believes. he also believes preemptive sanctions might have averted the invasion in the first place. and if you can hear the sound of the bombardment in the background, that's why he wants it. but president biden's been clear that such a move would run a risk of a direct conflict with russia that he's not going to involve u.s. forces in this war. david? >> ian pannell leading us off from kyiv again tonight. ian, thank you. meantime, in moscow tonight, what's now happened to that tv producer turned anti-war protester seen by the world in the last 24 hours, suddenly

walking up onto the set of a live broadcast on russian state tv behind that host, with a poster saying "no war" and "don't believe what you're hearing." well, she was in court today. the punishment and, of course, the question now, is this the end of it? here's our chief global affairs correspondent martha raddatz in ukraine tonight. >> reporter: tonight, the world's newest symbol of russian defiance unbowed as she left a moscow courthouse. marina ovsyannikova, a producer at russia's state television, arrested after interrupting a live broadcast with this sign -- "stop the war. don't believe the propaganda. they're lying to you." earlier, she recorded this video for a russian opposition group. "i am ashamed i allowed lies to be told on tv screens," she said. "i am ashamed i allowed russian people to be fooled." the kremlin dismissing her protest as "hooliganism." today, she was released and

ordered to pay a fine. it's unclear if she'll face further charges. outside court -- no regrets. >> it was my own anti-war decision. >> reporter: in kyiv, president zelenskyy publicly thanking her and "those who fight disinformation and tell the truth -- real facts -- to their friends and loved ones." leading russian opposition leader alexei navalny, now facing a potential new prison sentence of 13 years, pointing to her as proof russians are unafraid to rise up. "russia is big," navalny said. "there are a lot of people in it, and not all of them are ready to give up their future and the future of their children." 15,000 russians have been arrested protesting the war in ukraine. ovsyannikova sending this message -- "do not be afraid. they cannot put all of us in jail." >> and martha raddatz with us tonight from lviv inside ukraine.

and martha, that was a relatively small fine, just under $300 today for that producer, especially given the crackdown that we've been reporting on on russian protesters. obviously left many wondering if russia's clearly trying to avoid anymore attention being paid to the woman who stood up to putin and this war. and i know you're learning more tonight from your sources about morale among many russian troops? >> reporter: exactly, david. a senior official telling me the morale is very, very low among russian troops, coupled with a very high death rate. the senior official said as many as 10,000 russian soldiers may have been killed, although he said, at this point, it's impossible to verify that. david? >> all right, martha raddatz with us from lviv again tonight. martha, thank you. and as we mentioned, ukraine's president zelenskyy will address the u.s. congress virtually tomorrow. let's get right to our senior white house correspondent mary bruce tonight. and mary, as you heard ian report off the top tonight, very likely we will hear that plea again for a no-fly zone over ukraine. but the white house very clear

on its position on that again today. >> reporter: david, president biden is well aware of what zelenskyy wants, that no-fly zone, but the white house, again today, saying they have to consider u.s. national security here. saying that a no-fly zone would be an escalation that could prompt a world war with russia, stressing that they are a nuclear power. now, the president tomorrow is expected to highlight the security assistance that the u.s. is providing ukraine, including another round of nearly $14 billion in humanitarian and military aid. david, these are all likely to be topics of discussion next week when the president travels to brussels to meet with nato leaders for the first time since putin started this war. david? >> mary bruce live at the white house. our coverage of the war in ukraine for tonight. mary, thank you. in the meantime, we do move onto the other major news this tuesday night, that late-breaking headline on the pandemic. pfizer, just before we came on the air here, now requesting emergency authorization for a second booster now. so, we asked dr. jha tonight about the idea of another booster, what they're seeing in israeli data on this already.

also, what's being seen in waste water here in the u.s. and what this could mean. here's abc's stephanie ramos. >> reporter: tonight, pfizer formally asking the fda for emergency authorization for a fourth vaccine shot for people 65 and older. pointing to israeli data, where four shots are authorized. we asked dr. ashish jha, do we know enough yet? >> so, the preliminary israeli data does suggest some benefit for high-risk individuals, but again, it's preliminary and i think all of us want to see a lot more of the detailed data, we want to see the experience of other places, as well, and ultimately be guided by that. >> reporter: we also asked about the news on waste water and the new cdc numbers on the omicron sub variant. cdc data shows that omicron sub variant, ba.2, which could be 30% more transmissible, is now nearly doubling every week, and now makes up an estimated 23% of new infections. and waste water testing, an early warning system, shows 30%

of sites across the u.s. reported covid positive samples increased at least 1,000% in recent weeks. >> what we know is that waste water data tends to precede infection case identification that we tend to see, kind of when people go get tested. and we are seeing an increase in waste water data. by the way, we're also seeing increases of infection in europe, obvious ly in other countries. and just a reminder, this pandemic is not over. i don't expect a major surge or a major spike out of this, but we may see an increase in cases and we're going to have to see where this goes. >> reporter: overseas, covid is resurging. china is battling its biggest outbreak since the beginning of the pandemic. imposing new lockdowns for 51 million people. and european countries are now tracking a new spike in covid cases, fueled in part by the omicron sub variant, ba.2. >> in europe, we've seen an uptick of cases across almost all of the countries of europe, really driven by a couple of factors. one is ba.2, this sub variant of

omicron that's now become dominant in europe, i think it's a bit more transmissible. that's causing a bit of an uptick. obviously they've gotten rid of all mitigation measures, no distancing, no masking. i think that creates some susceptibility in that context. maybe a little bit of waning immunity, as well. so, that combination is probably the explanation for why we're seeing an uptick in cases in europe. >> and stephanie, dr. jha talked about the mitigation being dropped in parts of europe, but the masks and other measures have been dropped here, so, what's he most concerned about here at home, given the surges elsewhere reminding us, we're not done yet? >> reporter: david, dr. jha says what worries him the most is that so many americans are still vulnerable. he says many more people need to get vaccinated or boosted. and he also says that even though we wish this pandemic were over, it is not, but we now have the tools to manage it in a much more effective way. david? >> all right, stephanie, thank you. and one more note on the pandemic tonight. we learned late today that second gentleman doug emhoff has

now tested positive for covid. the white house says vice president kamala harris has tested negative. she was with the president earlier today for a bill signing. the president was last tested sunday with a negative result. to other news tonight and the arrest of a suspect wanted for allegedly shooting five homeless men in washington, d.c. and new york city, killing two victims. here's our chief justice correspondent pierre thomas now. >> reporter: tonight, the dramatic arrest of a man police feared wanted to be a serial killer. 30-year-old suspect gerald brevard iii accused of terrorizing the homeless in washington, d.c. and new york city. apprehended at 2:30 this morning in washington. at first he tries to run, but surrenders as atf agents, guns drawn, move in. >> we've got our man. >> reporter: brevard is accused of a crime spree where he allegedly shot five people, killing two, over a span of ten days beginning march 3rd. in this disturbing scene in new york city saturday morning, the suspect kicks a homeless man, appears to look to see if anyone is watching, and then fatally shoots him.

according to authorities, the attacks were random and the suspect did not know the victims. the ballistics showing the same gun was used in both cities. brevard has been charged with first-degree murder, and two counts of assault in washington. additional charges are expected in new york. david, police say the suspect had a history of mental illness and violence. his father saying tonight the judicial system failed. david? >> pierre thomas tonight. pierre, thank you. when we come back, could we soon be done changing our clocks twice a year here in the u.s.? migraine attacks? qulipta™ can help prevent migraine attacks. it can't prevent triggers, like stress or changes in weather. you can't prevent what's going on outside, that's why qulipta™ helps what's going on inside. qulipta™ is a pill. gets right to work to prevent migraine attacks and keeps them away over time. qulipta™ blocks cgrp a protein believed to be a cause of migraine attacks. qulipta is a preventive treatment for episodic migraine. most common side effects are nausea, constipation, and tiredness. learn how abbvie can help you save on qulipta.

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>> a state of emergency experiment is almost over in the tenderloin. plus, cache and covid shared a funding battle happening at the top. finally, the met opera, the baritone, and the concert for ukraine, selling out in ten minutes. ♪ under the ukrainian flag, the met opera singing the ukrainian national anthem. ♪ broadcasting worldwide, including on ukrainian public radio. ♪ the concert raising money for relief efforts in ukraine. ♪ standing centerstage, h h

over his heart, that 24-year-old baritone, vlad buialskyi. from ukraine, his family still there. vlad telling us he's finding new strength and solidarity in that song. >> it was so hard to not cry, because i understand that it's, like, the whole world with us. they support us. ♪ i want to say thank you and i really appreciate everyone. >> in between performances, facetiming with his mother back in ukraine, telling her americans are with us. then, beethoven's "ode to joy." ♪ a performance for the people of ukraine. ♪ with vlad and the people of ukraine. good night

has changed with gas prices and why. as the 90 emergency coastal close, we are checking results and providing. anchor: i will show you you next round of rain arrives. tonight, we are seeing results. we talk about doing a area and this is an example of what we mean.

of emergency. too many people are dying in the city. too many people are sprawled out all over our streets. and now we have a plan to address it. anchor: that 90 days is almost up. we have team coverage tonight. bestie reporter in the newsroom. reporter: when i spoke to the mayor yesterday about results of the 90 day state of the 90 day state of emergency, she told me it is not what it should be. we know that, but able get better. this was not intended to last forever, but more as a first step towards saving the tenderloin.