>> ambassador taylor, what is the effect of public declarations like the one we heard from president biden? does that impact whether or not vladimir putin chooses to invade, the fact that the u.s. keeps saying we expect he's going to do it in the next couple of days. does that detract him or have any effect? >> jake, i'm not sure that that has any effect on him. but you're right, he's the one that should make the decision. president biden is right he's ready, and evelyn is right, but he hasn't made that decision as far as we can tell which means he can still be deterred. he can go in another direction. he can decide to back down or blink and go to negotiation. that's the direction he should go. >> has he ever done that before? >> has he dub one that before? >> he seizes parts of georgia, he seizes crimea. >> this past april he built up on the ukrainian border. president biden called him right then and he backed down. he pulled not all of his troops