. >> with the end of the cold war, the warsaw pack vanished. 10 kuntz trees between 1997 and 2004.oes that decision look good now. you can imagine with the aggressiveness of putin, you can imagine what he might be trying to do to extend the russian sphere of flew into estonia and lithuania or bulgarian or policy appeared. >> since the fall of the berlin wall, nato has moved in to areas beyond the original mandate like sending troops into afghanistan and helping victims of hurricane katrina. it's helping a riffle destris putin. >> he does believe the expansion of nato has hemmed russia in, that the fight over the status of ukraine is in some way a fight to retain russian influence in its broader zone. >> the counsel on foreign relations, cup shaw says it soured russia on nato. >> it's there they felt nato took advantage to topple a regime and changed the next, moved the gold post. >> it may go beyond that. putin, himself, that declared the weinter olympics in sochi a symbol of russia's resurgence. it is that issue, russian pride, a sense of humiliation that putin is really tapping i