also crucial question there at the end because there's been a lot of public comment from white house officials about russia and its possible intent to use chemical weapons here based on russia manufacturing this idea that somehow ukraine was planning an attack, the kind of false flag or justification russia has attempted to use repeatedly in this and other wars. the president asked there, does he believe it's going to happen, said he would not get intelligence, erica, but did say if russia were to use it, they would face a severe response without specifying what that would be, but clearly, they're paying attention. >> they certainly are, and part of that question is, as you pointed out, not just about what they were seeing, which is, as you point out, couldn't get the intelligence but asked specifically what the response would be, and no specifics there, for obvious reasons but that is a question that is lingering. back with us now, cnn white house correspondent, john harwood. cnn global affairs analyst, kim dozier, moscow bureau chief here