crises on his first visit to the region as president. putin s invasion, china s rise, and threats of a north korean missile threat casting a shadow over his trip. here in the united states, the baby formula shortage throws the white house into crisis mode. the supply crunch is worsening tonight, raising serious questions over when parents will finally see relief. we want to welcome our viewers here in the united states and around the world. i m wolf blitzer. you re in the situation room. tonight, president biden confronting multiple challenges on the world stage, as he makes his first presidential trip to asia. cnn s melissa bell is tracking the latest battlefield developments from kyiv, our chief white house correspondent, kaitlan collins is traveling with the president in south korea. and cnn s barbara starr is watching the north korean missile threat from the pentagon. first, let s go to melissa and the ukrainian capital for us. melissa, it appears russia is about
weeks. and a lot of russian russian troops were, you know, encircled around mariupol and didn t go further to other cities. from the military point of view, the defenders of mariupol, did everything they could. and now we understand that we immediate to save their lives. because russia doesn t care about lives of their soldiers, but we do. so that s why in this situation, mariupol cannot be unblocked in military way, it was the only way to to save these people s lives. and we really hope that we can exchange those soldiers. for capture to russian soldiers, so they can come back to ukraine. how worried are you about for the ukrainian defenders of the steel plant in mariupol, who are now in russian custody. do you have any faith at all that the russians will reet