roosevelt -- that we had to fight the nazis first but at some point we were going to have to deal with the communists and it took us 45, 50 years to win world war ii and to defeat the soviets in the cold war. on a smaller scale, in a sense, this is the kind of problem we face. it's two totalitarian movements and one of them is of an immediate concern and the other is of the long-term and study and, i think, deeper concern. >> but if that's the case if i can just interrupt you if that's the case to follow your analogy should we in the short term be nice to iran to help defeat isis and then turn on them? it seems to me to be odd to be simultaneously against isis and its principal opponent. >> that's a tactical question. my judgment is no that we don't want to ease up on either iran or isis now but iran will probably have a nuclear weapon well before the ten years that