about it invasion, us troops arrived, the first appointment of us troops in support of nato are in poland with more expected to arrive in romania in the coming days to beef up a wall against vladimir putin. president biden warning russia and its president will face heavy sanctions if putin invades ukraine and while the administration continues to look for a diplomatic offramp senior officials admit the country is prepared if putin pulls the trigger. we are in the window. any day now russia could take military action against ukraine or it could be a couple of weeks from now or russia could choose to take the diplomatic path. the key thing is that the united states needs to be and is prepared for any of those contingencies in lockstep with our allies. eric: we have coverage throughout the hour. steve is alive in ukraine s capital. first let s go to alexandra who is at the white house.