is that something you ever think will be possible and that you re working towards? of course i think everyone understands who is responsible for this. that s why we do everything to document evidences but we are here in ukraine and actually understand who is responsible for all of this. reporter: the investigator s work is complicated by the fact the war is still going on. they can t reach many devastated areas like the enscircled city f mariupol where tens of thousands have been killed. irina says no matter how long it takes, she will push on. it is extremely important. if we will be successful as prosecutors, i will be sure we can stop such aggressions in the future. as fred was reporting, russian president vladimir putin
to be achieved. that s different than now. he was going to take control of the whole of ukraine. since then we know the focus has shifted to the donbas region where we see the military buildup. he s focusing on defeating naziism which harkens back to the memory of many in russia. these accusations of the use of chemical pep ponce. they keep coming back up. yes. what we re hearing, when it came to the commander of the azof brigade in mariupol. it s mostly destroyed. they say there was a chemical attack. on tuesday no one has been able to substantiate this. we have a reaction from the russian embassy in washington. they said this was disinformation, idol talk from the u.s. state department.
translator: the military operation will continue until it s completed. mariupol will be defeated. the russians have come up with a new tactic to ensure the devastation of their attacks last far beyond first impact. this is cnn breaking news. it is wednesday, april 13th. we begin with the mass shooting inside a new york city subway in brooklyn. the city s mayor described it as a quiet tuesday morning that turned into a war zone. the gunman is still on the loose. authorities say he set off smoke grenades before firing 33 shots. ten people were hit though all survived. 13 others were injured by smoke inhalation, falling down or panic attacks. new york s governor says four children on their way to school were amongst those hurt. police have identified the man who you see here is a person of interest because he s believed to have rented a u-haul van