Lets Get Real:
The two main Russian demands are that UKRAINE never joins NATO and that NATO troops are removed from East European States in NATO, those Countries that were part of the old Warsaw Pact. The simple answer to the Russians is NO and Hell NO, but course the US State Department will put it in diplomatic language, what the US can offer is TALKS on a new INF Treaty that the Russians broke numerous times before and agreement on when military games will take place. It will be up to the Russians to respond, if Putin wants a face saving way out of this crisis that is a GOOD DEAL. Of course the latest threat by Russian to take appropriate measures if they do not get what they want will call for NATO to place NATO troops in Poland and the Baltic States. One hopes Russians are just playing games, it could cost them if they take the wrong path.