ukraine still stands tonight, seven weeks into putin's war. you know what isn't upright anymore, however? the crown jewel of russia's navy. it has sunk. that's confirmed by russia tonight. moscow still refutes ukraine's claim that ukraine struck the more than 600-foot-long vessel with cruise missiles. russian state media blaming an accidental fire that allegedly caused the warship to lose stability in stormy seas. two sources familiar with u.s. intelligence say they believe ukraine's claim is credible. this is no doubt a huge defeat for putin and his navy, and there is something poetic about it, because this is the very same ship that attacked snake island on day one of this invasion and was famously cursed out by ukrainian soldiers with the iconic phrase, russian warship, go f yourself. and now it's no more. it's effed. ukraine is racing to prepare for the onslaught from the east. a pentagon official says the russians have started arriving in the northern part of the donbas region. the pentagon says today that they're working as quickly as possible to move $800 million worth of additional military aid and equipment. amid that race comes another to collect the evidence of possible war crimes being committed by the russians. i spoke earlier with the chief prosecutor from the hague, the international criminal court. he's in this country right now leading the war crimes invest nation. he's already labelling ukraine a crime scene after visiting the towns of bucha and board yan i can't on the outskirts of kyiv, where some of the worse atrocities of the war have been committed. stude stay tuned for that one. first on the developments on the sunken russian ship. fred, what can you tell us? >> it was a huge morale boost for the ukrainians. unequivalent the national security adviser said, yes, we shot that ship. he said, it was the neptune cruise missile land to sea missile that shot that ship. he was nonchalant about it. he said, yeah, the ship just sank. i think it's an important victory for the ukrainians, not just militarily, but also from a morale standpoint for the people in this country. something we saw in kyiv today but also heard from the national security advisers as well. >> reporter: it seems like a massive blow to russia's war against ukraine. ukraine's forces saying they've struck the flagship of putin's black sea fleet, the guided missile cruiser, "moskva." can you tell us what happened to the cruiser "moskva?" it sank, he says jokingly. russia admits it was struck but has not acknowledged it was struck by kyiv. instead it was badly damaged by a fire and sunk while being towed in stormy seas. the ship was involved in a famous incident in a place called snake island, when its crew told ukrainian soldiers to surrender. this was the answer. >> [ bleep ]. >> reporter: the event has become so legendary in ukraine, they've commemorated it with a special stamp. people at this post office in kyiv standing in line to get it. an important event happened yesterday. our armed forces destroyed the aggressor's flagmen ship. i think this event has to have a place in everyone's memory, this man says. the ukrainians say they managed to hit the ship, which has formidable defense systems with ukrainian neptune anti-ship missiles. the "moskva" was still there near the snake island and was hit by two powerful ukrainian missiles, he says. and then a warning to putin. this is just the beginning, he says. there will be more than one. but the leadership in kyiv understand the next major battles will be different and possibly even more bloody, as russian tanks and artillery pour into the donbas region. this hoard has invaded our country, and they think we will watch them destroy us, he says, but of course we will respond by all means we have. thanks to our international partners, we have interesting tools. the u.s. and its allies have provided ukraine with billions of dollars of weapons and are moving to give kyiv heavier arms. the national security adviser says ukraine needs all the fire power it can get. i would never say that the russian army is weak, he says, given the amount of weapons thrown there, the number of tanks, armored personnel carriers, planes and helicopters. i would not say this is a weak army. i would say these are strong ukrainian soldiers who fight back such a powerful army. and these territorial defense soldiers in kyiv are vowing to keep up the fight. they're elite troops gearing up to head east. we are absolutely prepared for this. we have both fighting spirit and fighting move. we are patriots of our country, and of course we will fight back the enemy. this soldier who goes by the name vlad the rifle tells me. and they vowed just like in kyiv, they will confront the russian army once again. >> and jake, we've spoken to a lot of these national defense forces, and there's a lot of them who are saying they are moving increasingly toward the east. it's not just the russians going there. ukrainians also moving a massive amount of forces down to the east as well. >> do we know how the russians are preparing for that offensive? >> the ukrainians today said they believe part of that big russian force is coming from here from kyiv, got beaten here, is apparently training in the west of russia to get ready for the fight that could happen here. they do also have reconnaissance units on the ground south of the region who are scoping the area out while some of their other forces are conducting strikes. it really seems as though the russians are trying to take a different approach than they did here where they really rushed in and really trying to move maybe not as fast but maybe more force than they did here. >> they thought they were going to be greeted with rose petals. fred pleitgen, thank you so much. to our conversation with the top prosecutor with the international court of hague, karim khan. he spoke with survivors and families of murdered civilians, as he pledges to get to truth. i spoke with him earlier today. >> prosecutor khan, thanks so much for doing this. appreciate it. so, you have been going around the country. you've been to bucha. you've been to borodyanka. what have you seen? have you seen anything that surprised you? >> unfortunately a lot. i think we have all been seeing the pictures and reading the reports regarding the devastation, the human cost both to property but really most importantly to -- to civilians, men, women, and children. so, it was an opportunity to see firsthand, to verify, to try to start a process of collection. >> putin is out there saying it's all fake, it's all a hoax. you're seeing it with your own eyes. >> we have to separate truth with falsehood. truth is said to be the first casualty of war. there's allegations and counterallegations. i think this is why there's a role, a political role for an independent office. we're not in favor of russia or ukraine. we're in favor of humanity. >> you're not in a position right now where you are asserting the russian military is committing horrific acts or the russian military is committing war crimes or, as president biden said, putin is committing genocide? that's not your role right now. you are investigator getting facts, and you're not ready right now to assign blame one way or another. >> i don't have the luxury of a politician to speak in generalities. we have to have evidence for every proposition we put forward. and it requires deliberation. it requires of course some urgency to get to the truth. but we're committed to that. but the principle of nuremberg, the united states, and russia, as well as the other victorious powers established a principle in nuremberg that was eloquently put in. the crimes are not committed by men. so, we're not looking at russia or ukraine. we're looking at individuals, individual who is have power, mostly men, whether it's a rape or whether it's a gun or whether it's mortar or whether it's a shell or whether it's a missile from an airplane, there are obligations. people cannot under the laws of war do what they want with impunity. >> how is it possible to go from just holding a private or a sergeant responsible versus this is systemic. they were told to do this. and it goes up the ladder. you hold colonels, generals, commanders, president putin responsible. how does that work? >> the important thing is i think it's -- nobody is above the law. nobody is beneath it. but whether you're a private or a captain or a colonel or a general or a civilian, nobody gets a get out of jail free card. nobody gets a free pass. every individual must act with responsibility in the contact. and there is a personal accountability. it's not a defense. nuremberg established it. superior orders is not a defense. it's not enough to attack a civilian object and attack women and children. >> so, the reason the nazis were able to be tried at nuremberg is because they were defeated, right? they lost. it is likely that however this conflict ends, putin will still be in power. russia is not a signatory to the international criminal court, neither is the united states for that matter. so, how can we guarantee that there will be some sort of justice, given the fact that russia is not on board with the icc. and it's likely that the kremlin and all its leaders will still be standing when this conflict's over. >> we can't be naive about things. we need to be realistic. first thing's first. collect the evidence, analyze it, make determinations based on what it shows. those determinations can be checked by judges. in terms of the surrender of individuals, this is an issue we've seen before. yes, you're quite right about the allied powers after the second world war, but many arrest warrants were executed in the form of yug yug it may not be easy but i do believe with collective effort, the law can be vindicated, but time will tell. i have to as a prosecutor, do my job. judges then will do their jobs and check and verify and make the determinations that we will respect. there's great realization that a common front needs to be built based upon legality because it affects ukraine, but it affects all part of the world because of the rules based system and the principles of public international law that have to be rendered much more meaningful not to judges or advocates in the courtroom but to the men and women and children that you see on the streets and refugee camps that are completely innocent and that suffer horrendous crimes time and time and time again. and we tend to have not really short memories but also an absence of shame. >> every year i read these statements from world leaders, never again, never again. and there's always a genocide going on, whether myanmar or any of the other places that you've mentioned. what do you say to somebody out there who says it's all nonsense? they say never again and then tens of thousands of ukrainians get massacred and the western powers just sit back and, you know, they send some arms but they don't really get involved. >> i think it's incredibly difficult. you're spot on. it's a matter of shame that what you say is true, but it is. as i said, it can't be hopeless. we can't give up hope because we have people commit to murders and whole variety of crimes. the issue should be collective will to impose these standards in practice. and it's about progress. yes, the world is full of contradictions and hypocrisies and double standards. i accept that. but generally, if you look where we are today in terms of the relevance of international law and international criminal law, for all its defects and shortcomings, i think objectively we're in a better place than we were, you know, in the 1980s or the 1990s. and i think if we keep working, if we don't give up hope but be realistic and try to improve the compliance with the law, we'll make progress. and utopia doesn't exist in practice. it's about trying to keep progressing the way that is meaningful, and we don't stop. >> thank you so much for your time tonight. i appreciate it it. >> thanks so much. the russians have been attacking civilian areas throughout this invasion. we've been showing you the horrific scenes in mariupol for weeks. and the city remains under assault. so many still trapped there. you're about to hear from one woman who managed to escape as the bombs fell. that's next. it works naturally with the water in your body to unblock your gut. free your gut, and yourur mood will follow. this is vuity™, the first and only fda approved eye-drop that improves age-related blurry near vision. wait, what? 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>> yes. >> it's almost like you could feel yourself running out of time. there was only so much longer you could stay in mariupol. >> i thought i will never go from mariupol until the end. >> reporter: on march 16th, she evacuated. she recorded two short videos on her way out just before seeing a family walking on the side of the road, a mother, grandmother, and two young girls. >> we had two free places in our car and we saw this family and we decided to help them. >> at one of the russian military check points, they stopped in front of a soldier. >> and he show us, go out and gun turn on our car. and after that he, began to shoot. >> reporter: one of the bullets pierced the car over her head. but in the backseat was an 11-year-old, shot in the face. the russians realizing their mistake, sent the girl to a hospital. tatia now separated travelled on without knowing if the young girl separated until -- >> 1, 2, 3, 4, 5, 6, 7. >> reporter: cnn found her in the basement of a children's hospital in ukraine after surviving life-saving surgery. the relief is overwhelmed by the horrors of what she witnessed. >> i saw a lot of dead people, a lot of community graves, for example in my yard. and i started to believe that they're crazy because they were like maniacs. >> they were maniacs to you. >> yes. they're really -- they're really crazy, like nazis in the second world war. >> reporter: after escaping, tatia remembered the video she recorded before the russians ravaged mariupol, ukrainians protesting outside the theater that in a matter of weeks would be the site of a grotesque strike. the building still intact, the building unscathed. she sees the peaceful faces of families and children. the video is hard to watch. are these people alive or left in makeshift graves around the city? tatia doesn't know, and for her, there's only one way to deal with this haunting reality. >> i decided that i will cry only when the ukrainians get victory. >> and jake, this is a reminder that the civilian crisis in the russian occupied areas of ukraine still continues. we've spent the last few days reporting in rural areas. and a common sight is seeing convoys of civilian vehicles, some buses, people driving away from these russian-occupied areas, many of them with white flags hanging from the car and signs that read "children" as they flee to safer areas in this country. jake? >> ed, while u.s. officials agree that mariupol is still contested, although the russians certainly still have the advantage and they've been pounding that poor town, russians are still trying to win the narrative, russian state media. this footage wednesday, which allegedly shows ukrainian marines surrendering to russian forces, we don't know if this is real or not. what more can you tell us? >> wehat we do know is there ar two units or there are two ukrainian military units fighting off the russians there left in that city. ukrainian military reported yesterday these units had converged but in that joining russian military with this video. e we should be clear russia has been engaged in a high-level propaganda game for much of this war. cnn is not in mariupol. we're not embedded with russian troops. but they claim to have taken more than 1,000 prisoners of war in that city of mariupol. the ukrainian military that is in the ground there did acknowledge in a statement yesterday that some ukrainian soldiers had deserted and essentially surrendered in that fight. but we don't know if the extent is more than 1,000. that is a highly significant number. but that is the -- as close as we can get to the reality of what's going on there in that city right now. >> yeah, the fog of war. ed lavandera, thank you so much for that reporting. appreciate it. we want you to meet another remarkable ukrainian ahead. this one is a pastor who is not only helping to lead others in prayer here in kyiv. he also joined in on the fight for his beloved country and is a volunteer battalion commander now. hear his incredible story. that's next. 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[ding] e*trade now from morgan stanley. asya agulnik md: st. jude was founded with an understanding that no child should die in the dawn of life. to work with many partners all over the world, nothing stops in the way of us achieving that mission, not even war. marta salek md: when there is a need, people stand up and do what is right and ensure that they restart medical therapy as quickly as possible. carlos rodriguez-galindo md: any child suffering today of cancer is our responsibility. continuing now live from kyiv, the ukrainian resolve to fight back against the russian invasion seems to only be growing stronger with each day. i want to introduce you to one of the remarkable faces of this war, a ukrainian protestant pastor. he's a father of two turned volunteer battalion commander. while his son and youngest son moved to western ukraine, she chose to stay behind to train regular civilians, people who had never even held a gun before, to prepare for this fierce combat. let me just ask you how you and your unit have been doing over the past few weeks. >> hi. thank you for having me and giving me a chance to speak up for my country and for my people. 80% of my units are people that have never held a gun in their hands in their lives. they're ordinary truck drivers and lawyers and you name it. and we've been through some intense training for a couple of weeks. then we spent some time on the front lines north of kyiv. and that was a remarkable experience for most of my guys. thank god everybody's alive and no injured. at the moment we are prepared to be deployed to the south of ukraine. in a few days we're going to take off and going to defend civilians there. >> i'm told you have 120 people under your command and the volunteers range in age from 18 to some folks in their mid-70s. is that right? >> yes, that's correct. yes. >> what do the people in their mid 70s -- are they capable -- no offense to any seniors out there, but i'm 53, and i don't know i'd be capable of this. are they able to keep up with you? >> yes. this one particular kguy, he's been through four wars with russia since 1991 in georgia and different former soviet republic countries. and actually he's training my guys. he is sharing his experience, and he's doing a great job. >> sounds like a vital part of the team. so, you posted video of the trenches that you and your unit had dug. what has it been like training people who have no combat experience, especially in such a short period of time? >> well, for the first few days, they are -- they are trying to argue with me and trying to tell why they shouldn't be doing what i'm telling them to do, like digging trenches. but i'm telling you, after the first shelling, everybody wants to dig trenches. >> and while you're helping people to physically prepare for battle for the war, you're also a pastor and you're also helping them mentally and psychologically and spiritually as well. tell me about how your faith has helped you help the people around you, help your battalion. >> i don't know what i would be doing if not my faith and if not my relationship with jesus because i think that's what helps me to hold on and not to give up. this is my church at the moment. i'm not only their commander. i'm their pastor. and they are asking me to pray for them now. the first few days, i had to order them to pray. now they're asking me to pray for them. >> and your wife, we should mention, in the western part of the country, she's helping internally displaced ukrainians. and your youngest son has also joined the territorial defense force there. how are they doing? what's been the impact of all of this on them? >> my wife is my hero. excuse me. >> take your time. >> so, at the moment, my wife is taking care of 300-plus refugees. they're coming every single day to the western ukraine from those occupied territories. and she is not only helping them with food and lodging, she's working with women and kids specifically, trying to provide psychological help to them. and recently she took responsibility for some elderly people that have been replaced from the occupied territories. she is my hero. she didn't want to go to europe. she decided to stay in ukraine and wait for the victory there. >> she sounds like a remarkable woman. how's your son doing? >> my son badly wants to be with me, but i told him that he has more important task. he has to take care of his mom. so, that's what he is doing at the moment. >> well, oleg magdych, it's been an absolute honor to talk to you this evening. and i'm wishing the best for you and your beautiful family and of course for the people of ukraine. thanks for your time tonight. >> thank you so much. thank you for giving me a chance to tell everyone about what's going on. thank you for being our voice. >> thank you, sir. like i said, it's my honor. coming up, how much will this war change if ukraine is indeed responsible for having taken out that russian warship? plus, the cia's concern about russia, putin specifically, potentially turning to a tactical nuclear weapon. we're going to talk to a retired u.s. army general about that next. i love being outside. my eyes...not so much. until i found new clear eyes® allergy. just one drop means all day relief and my eyes...feel azing. new clear eyes allergy. dove knows we damage our hair a lot my hair i curl it. i have to use a lot of heat new dove hair therapy shampoo & conditioner with ceramide & peptide. it nourishes at a cellular level to rescue damaged hair. discover 10 x stronger hair with new dove hair therapy rescue and protect. as the world watches the tragedy in ukraine, oil and gas ceos see an opportunity to get richer. hiking gas prices here at home and profiting off of putin's war. this will continue to happen - as long as we're dependent on oil. americans have had enough. right now, congress can accelerate the transition to clean energy. energy that won't run out. energy that's cheaper for all of us. energy that's made in america to stay in america. congress - let's get it done. [♪] did you know many anti-fungal products are not intended for the nails? try kerasal. unlike others, it's formulated with clinically-proven ingredients that penetrate fungus-damaged nails to start improving nail appearance in just two days. try kerasal. a haunting scenario from the cia director today about the possibility that vladimir putin could order the use of a tactical nuclear weapon against ukraine. take a look. >> given the potential desperation of president putin and the russian leadership, given the setbacks that they've faced so far militarily, none of this can take lightly the threat posed by a potential resort to tactical nuclear weapons or low yield nuclear weapons. >> with me to discuss is retired two star major general and cnn military analyst. he's also the author of hunting the caliphate. thanks so much for being with us. the cia director also spoke of putin's desperation. how likely do you think it is putin could order the use of a nuclear weapon in ukraine? >> good morning, jake. i would hope it's unlikely, but we already know that putin has been isolated. there is a sense of desperation because the losses, the russian forces in ukraine. but nato and the u.s. must send an unequivocal message to russia that any use of a nuclear weapon will start a nuclear war, even the use of a, quote, tactical, unquote, nuclear weapon would be considered an act of nuclear war. >> russia's former president, dmitry medvedev, who is currently on russia's security council, he made threats over the potential expansion of nato. as you know sweden and finland are interested in joining nato. medvedev said, it would no longer be possible to talk about non-nuclear status. how worried should we be? is there a real escalation threat here? >> i don't think so in that area. i think it's a lame attempt to intimidate finland and sweden. but just the opposite is occurring. finland and sweden, for the first time in 70-some-odd years of neutrality, want to join nato. >> yeah, no, not exactly strategic brilliance by putin, if he wanted to have ukraine be allied with the russians, if he wanted less of a nato stronghold in europe. you say that the u.s. and nato need to take the strategic position and force russia to react rather than the u.s. and nato reacting to russia. explain what you mean by that. >> yes. in fact, the united states and nato must take much more active measures. again, taking the strategic initiative, make russia react to what we do, as opposed to vice versa. and there's a number of things we could be doing, whether it's declaring, along with the government of ukraine, western ukraine as humanitarian assistance zone. and that would be from east of kyiv all the way south to odesa. and that would be enforced on the ground by nato troops and enforced in the air in a no-fly zone. that is one thing. also, u.s. and nato could also deploy special ops advisers to assist the ukrainians in employing many of the weapons that nato is giving them so they can be better employed. of course when you bring special ops, you bring other enablers, whether it's intelligence, whether it's logistics, whether it's even air strikes, which would be an escalation. but make russia react to what we are doing. we can also push nations that are currently under russia's thumb, whether it's kazakhstan in the east, tajikistan, georgia, even belarus to rebel against russian rule. again, that will bring dilemmas for putin and russia. their forces are dwindling, and they're trying to bring forces from other areas, so there's weakness in other areas. >> well, to play devil's advocate, i obviously don't have a position one way or the other. but to play devil's advocate, what you're proposing in terms of the humanitarian corridors in the western part of ukraine or special operators advising and assisting would almost certainly lead to a u.s. service member being wounded or killed by russian troops. i mean, if history is any guide and then all of a sudden what joe biden, president biden has said he doesn't want, world war iii. >> yeah, i'm not sure that would cause world war iii. but what it would would reinforce something president biden has said is that it is a battle between democracy, freedom-loving nations, and autocracy. and right now what we're doing is helpful to ukraine. but is that enough? what we want to see, ideally, is for ukraine to win and russia to go back into russia and honor the borders of a sovereign, free nation of ukraine. >> general, thank you so much for your thoughts this evening. it's always good to have you on. coming up, train lines are lifelines, especially for those trying to escape the worst of this war, especially with those who have been wounded by the russians. we visit with ukrainians making their escape. we see how doctors are turning some rail cars into makeshift ambulances, even hospital rooms next. you know liberty mutual customizes your car insurance, so you only pay for what you need? like how i customized this scarf? check out this backpack i made for marco. only pay for what you need. ♪liberty. liberty. liberty. liberty.♪ we're back in kyiv, ukraine's capital city where thousands of ukranians have been traveling to on their way out west, checkpoints making roads virtually impassable at times, getting on a plane out of the question. the only way to travel is by train. as we know, they bombed a train station, so we know even that is not safe. >> tens of thousands massacred and russia repositioning for a new assault. these ukrainians are not waiting for what's next. >> translator: a week ago, we were thinking and hoping that it would stop. it will be calmer. but it didn't change. >> reporter: less than a week after russia bombed a crowded railway platform, those lucky enough to evacuate on these trains believe the ride was worth the risk. with air travel nonexistent, unexploded bombs and checkpoints on the roads, trains remain the safest way to flee. >> translator: it's not only the question of shelling but the question of safety that some people may come and just take you away. we can't stay. >> reporter: baby maxim and his mother arena plan to walt out t -- wait out the war in germany. at the train station, volunteers in this booth answer questions and help facilitate safe housing in poland, lviv, germany and more. where most want to go is back in time. >> translator: we want as much as possible to continue living as before. >> reporter: she and her husband are just two of thousands of ukrainians they have helped get to a safe place. >> translator: we hoped it would be easy. we left everything behind. >> reporter: thousands and thousands of ukrainians fleeing their hometowns come here to the lviv train station. they try to get accommodations, they can get food here from the world central kitchen. there is a fire over there, a woodburning stove heating up water. people have just come with whatever belongings they can take, and their loved ones just trying to get to someplace safe. away from the crowds at a smaller train station nearby, the most fragile passengers have their carefully coordinated welcome. doctors without borders arranged this train. there were a few cars with kids from an orphanage. and now in these remaining cars, there are ten people, nine of them children, almost all of them wounded in the attack on krematorsk. they are getting off the train and getting into these ambulances. this was not the arrival they imagined when they came to the krematorsk train station last friday. but after russians targeted the crowd on that platform, many of these passengers, these children, suffered shrapnel wounds so deep, surgery is required. their train to lviv is outfitted with medical equipment in each car as well as a team of doctors and nurses. dr. stieg wall ravens was on board for the 24-hour journey, overseeing medical complexions along the way. >> the air between the lung and the chest was due to a penetrating blast. >> these are the kinds of wounds one expects to see in soldiers, not in children. >> you expect to see that in war-struck areas where civilians are also close to the firing line. >> pretty tough stuff to see kids hurt like that? >> it remains tough, yes. >> reporter: he said his team has been going back and forth on these kinds of medical transports for ten days. this group of some of putin's youngest victims safe. for now. and helded for more care. back at the main terminal, the trains keep chugging in and out and across the country, bringing ukrainians from the besiege d south and east to lviv where they can have the small luxury of a moment to cry. we were asked by the authorities there to not show you the orphans and to not show you the kids who were so grieve usually injured in the krematorsk attack, and we honored their wishes, but i have to tell you, having been there, that was tough to see. we'll be rightht back. go. 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