diplomatic engagements with russia. the u.s. is ready for a diplomatic path forward but is also, quote, prepared to respond if moscow moves ahead with an invasion. there will be security talk that will include moscow's demand that ukraine not join nato. russia has mirrored nearly 100,000 troops near the ukraine border sparking fears of an invasion. joining us to talk about this, white house correspondent for "politico" and contributor to msnbc. it's so good to see you, my friend. there's a sense on both sides that any deal will be made at the principal level.