united states should agree on the principle of talks, there were clearly russian demands that were unacceptable either to nato or to the united states. melissa bell, cnn, moscow. now, while it s clear the west intends to respond forcefully to any russian aggression in ukraine, very few details have been provided. earlier i spoke with the new york times chief diplomatic correspondent steven erhlanger what the u.s. would do if russia invaded. i m not sure that s the point. have we all decided with our allies what action we ll take given putin s various options, the u.s. will not act militarily. it made it very clear it is not going to go to war for ukraine. ukraine is not a member of nato. but it does promise, along with its european allies, punishing economic sanctions that are