Highest-ranking u.s. official to have gone into kyiv since the beginning of this war, and she is definitely there to assert that the u.s. remains committed to ukraine s struggle, but also to everything that the rest of europe is going to have to endure to support ukraine with refugees, with aids, with military assistance. all of this is looking at this as a long haul. it is not going to be a quick war by any stretch. and remember, this is also going on for eight years as far as the ukrainians are concerned, and so they re just trying to keep that momentum alive and well. officials i spoke to in recent days say we should start to think about measuring this in years perhaps not months. we re going to have you back again real soon. thank you for spending some time with us on such a busy day. we really appreciate it. coming up, we re live with cnbc, to see what s driving the markets this morning, after a rollercoaster session on the first trading day in may. plus, spirit airlines tur