do that even though you think militarily it could be necessary? >> i do in some ways. it's a humanitarian mission to take care of refugees and civilians who, as we're seeing, the russians have very few forces there but are lobbing missiles into that area. they're killing civilians. nato and the united nations could be a part of this. demand that russia not fire into that humanitarian assistance zone. that is the best way to safely move the civilians and protect them. >> a provocative idea. we'll continue to watch. general pittard, thank you for your time and insights, sir. >> thank you, john. >> some brand-new details just in to cnn on president biden's call with ukraine's president last hour. stay with us.