john greenfield, creations take center stage. it's the berlin fashion we closing show with a huge symbolic character. together we're strong and together we can overcome all the difficulties in a really believe that now we're like, built in the foundation of then you world and in, in, in, in our new worlds. ah, there won't be such sinks as war as a 10 year, as lake greedy desire of bower. standing ovations for john greets build and his berlin helpers sending a strong message, of course in peace. ukraine. moving on to valencia as spain now were after a 2 year hiatus due to the corona virus. an annual celebration of spring is underway each year. large numbers of artist gather for last fi us or the festival of fire. here they have a chance to create an present giant sculptures that are burned at the end of the festival. now these sculptures usually represent the current political climate, or other controversial issues. we met up with this years of featured artist for a behind the scenes look into the festivities. the annual last by a

john ismay, new york times. >> hi. today at the emergency special session of the united nations general assembly, u.s. ambassador linda thomas-greenfield said that cluster munitions and what she called vacuum bombs are banned under the geneva conventions. and i'll say here that i assume by vacuum bombs she meant fuel-air explosives or other forms of thermobaric weapons. so, i was hoping you could tell me what the status is of the pentagon's ongoing internal review on its own cluster munitions policy. and can you say whether the pentagon believes that cluster munitions and thermobarics are banned under the geneva conventions? thanks. mr. kirby: john, i don't have any updates for you on the policy reviews with respect to cluster munitions. and i'm going to have to take your question on the geneva conventions. i'm afraid i'm not an expert on that. and rather than spitball it, i'll take the question and we'll get back to you. abraham mashie? >> hey, john, two questions. number one, how much coordination is going on between the united states air force, nato and the ukrainian air force? and second question, is the u.s. air force continuing t

john herbst, the former ambassador of ukraine. also with us, retired air force colonel cedric leighton. ambassador, i want to get your reaction of what we just heard from linda thomas-greenfield, saying they have seen video, cluster munitions, vacuum bombs, weapons banned under the geneva convention. what do her words in front of the u.n. general assembly mean? >> those confirmed reports coming from ukranian authorities in the last several days about their use of cluster munitions and vacuum bombs. this is clearly a war crime, and it seems to be an indication that putin is going to move from a straightforward invasion into the use of massive bombardments of invasions, a tactic which got him a victory in syria. we should have taken him down then and before that when he did it with chechnya. >> the ambassador said it's too early to say whether it's a war crime. do you think this conflicts with those reports? >> if the ambassador to the u.n. confirmed that they are banned, then that's a war crime. the overall response to the crisis has been sound. >> tukalk to me about the lethality of these weapons. cluster munitions, vacuum bombs. why does this take the weaponry to a new level

security council meeting, linda thomas-greenfield addressed the disinformation, she says is a sign of its desperation. >> sandra: jennifer, thank you. >> john sound cut. joe is joining us, "nuclear nightmares" and "bomb scare," and talk about the ultimate nightmare, chemical or god forbid nuclear weapons. the russians have been trying to get into kyiv on at least two, maybe three axis, they have not been able to surround the city, they have tried to get around the city with you can't, surrounded it on three sides but they are stuck, trying to get to odesa, cannot make it there. they hope mariupol -- they have not made advances anywhere else. kind of stuck. does that increase the possibility that vladimir putin may go to something unthinkable to wedge things free? >> unfortunately it does. completely unpredicted by almost anyone, the russian offensive has stalled, ukrainians are mounting counter offensives. the aid package will help them with javelins stingers, to attack the convoys. we have seen the photos from the turrets blown off the tanks. but putin's psychology and russian doctrine indicate when you are in a situation like this, you es