ominous message today warning that vladimir putin is growing more and more desperate and could be preparing to use chemical weapons. on top of the growing death toll, the destruction in ukraine is vast. a united nations report just out details more than $100 billion worth of infrastructure has been destroyed in the first three weeks of the war. and we learned an american citizen is among the deaths tonight. jim hill from diggs, idaho was killing, waiting in a bred line in chernihiv. president biden will speak with president xi tomorrow, warning his country will bear responsibility if they support russia's aggression and face sy significant costs ." we have a lot of news tonight. first to ukraine and chris livesay in the city of odesa. good evening, chris. >> reporter: i've lost the signal. good evening, norah. russian forces have launched more than 1,000 missiles since the the start of the invasion,