we have to see deescalation. reporter: the u.s. vowing to slap unprecedented sanctions on russia if it further escalates the situation with the ukraine. we are prepared to deal very resolutely with russia if it chooses confrontation, aggression. reporter: so far president putin has demanded the u.s. pull troops out of eastern europe and rule out expanding nato to include ukraine. but neither are being considered according to the biden administration what could shift washington is prepared to discuss the possibility of scaling back military exercises and missile deployment in the region, but only if agreed upon by moscow as well. monica is with us putin has also sent military troops to another former soviet union republic today. russia was invited by kazakhstan to deploy an estimated 2500 troops to help authorities reassert control in the