i'm frederica whitfield. >>> we begin with new developments in ukraine. russians have begun shelling evacuation convoys as civilians desperately try to escape. >>> russian forces launched a series of strikes targeting a key oil refinery in the central part of the country. emergency services fighting a fire there and trying to determine if there were any casualties. >>> it comes just a day after russia says ukraine launched a helicopter assault on russian soil for the first time destroying a fuel depot. overnight, ukraine's president volodymyr zelenskyy saying that russian troops are slowly but noticeably moving out of the north of the country. this morning, the ukrainian flag raised over the chernobyl nuclear power plant, weeks after it was captured by russian forces. and new satellite images show russians troops withdrawing from a strategic airport outside kyiv which was captured on the first day of this war. >>> all of this happening as new evacuations are under way in several besieged eastern ukrainian cit

i'm frederica whitfield. we begin with new russian attacks across ukraine. the latest happening just a short time ago in odesa. officials giving new details about russian missile strikes who hit a military facility and two residential buildings and we're seeing disturbing new proof of possible war

i'm frederica whitfield. we begin this hour in ukraine. russian forces are said to be regrouping in the east of that country. ukrainian officials bracing for a new onslaught and an attempt of a massive breakthrough attempt by russian forces in donbas. right now, heavy shelling continues in kharkiv. much of the city reduced to ruins as you see here. officials there urging civilians to evacuate in advance of expected heavy fighting. and today ten new humanitarian corridors are set to open across eastern and southern ukraine. those evacuation routes are being adjusted following a horrific russian attack on a train station. a warning, some of the video is very disturbing to watch. but we feel it is important to show you exactly what's happening to civilians there. that russian strike on the train station on friday killing at least 50 people, including five children, almost 100 others wounded in the blast and all were trying to escape the war. president zelenskyy vowing to hold all those responsible accountable. and it comes as a european offic

i'm frederica whitfield. >>> moments ago, the port city of odesa announced a russian missile hit infrastructure facilities there. details are still coming in. and we're seeing what could be chilling new evidence of possible war crimes in ukraine.

i'm frederica whitfield. we begin this hour in ukraine. russian forces are said to be regrouping in the east of that country. ukrainian officials bracing for a new onslaught and an attempt of a massive breakthrough attempt by russian forces in donbas. right now, heavy shelling continues in kharkiv. much of the city reduced to ruins as you see here. officials there urging civilians to evacuate in advance of expected heavy

i'm frederica whitfield. >>> we begin with new developments in ukraine. russians have begun shelling evacuation convoys as civilians desperately try to escape. >>> russian forces launched a series of strikes targeting a key oil refinery in the central part of the country. emergency services fighting a fire there and trying to determine if there were any casualties. >>> it

i'm frederica whitfield. we begin with new russian attacks across ukraine. the latest happening just a short time ago in odesa. officials giving new details about russian missile strikes who hit a military facility and two residential buildings and we're seeing disturbing new proof of possible war crimes. satellite images appear to show mass graves outside of mariupol. an adviser to the mayor says they show mass graves. but cnn cannot independently verify those claims. and the discovery happening as the heavy fighting continues in the port city. an estimated 100,000 people, both soldiers and civilians, trapped amid the relentless russian onslaught. one small boy praying for a miracle. >>. >> translator: i want toss the sun so when our houses are rebuilt, we can live in peace, so we can live in ukraine, because this is our native home. >>> another humanitarian corridor opening in mariupol as civilians try to escape the fighting. russia capturing dozens of small towns in the east, but uk officials say russians have not made any major gains in the last 24 hours

>>> thank you so much for joining me, i'm frederica whitfield. we're watching breaking news unfolding in ukraine. a stunning show of solidarity. boris johnson traveling for a surprise meeting with ukrainian president volodymyr zelenskyy in kyiv. the two reportedly discussing a new package of financial and military aid for ukraine and it comes assist ukrainian officials brace for suspected major offensive by russian forces in the east, heavy shelling already under way in kharkiv, much of the city decimated. and efforts are under way to evacuate civilians ahead of any heavy fighting. ten new humanitarian corridors are opening and we're getting our first horrific images from the aftermath of a russian strike on a train station in kramatorsk on friday. a warning, some of the video is disturbing to watch. we feel it is important to show you exactly what's happening to civilians there. the russian strike killed at least 50 people, including five children. 100 others were wounded in the blast, all attempting to escape the carnage as russian forces withd