treating russia? >> they're also using a delicate, diplomatic and repeated language. we're hearing a lot of the same phrases over and over. very clear messages here. the white house hrepeatedly called for a full, credible, prompt, unimpeded and international saying that is critical and also vital that the scene remain safe and undisturbed. that evidence is available so there is safe and unfedered access to those international investigators and to ensure that the u.s. is calling now on all sides for a cease-fire. the white house offered ukraine u.s. experts to provide all possible assistance immediately. it's understood that ukraine accepted that offer and we could see a team of fbi, ntsb, u.s. intelligence head to ukraine and at one point the white house said a u.s. team was ready to go soon, but that is all still being worked out right now, john. >> michelle, thanks so much.