really try not to drag george kennan into every discussion, and actually congratulated by my colleague, charlie hill, last monday; that in fact we had gotten through two hours hours f discussion without my bringing up george kennan. charlie said this was great achievement. but he does show up, of course, because he was one of the great strategists of the 20th 20th century. i think in terms of history, he is comparable to bismarck or the other classical grand strategist, he'll be remembered in that way. he himself regarded the study of the classics, strategy, as extraordinarily important in shaping who he was. so, yes can we talk about these things quite a lot but i would not hold george kennan out as a model grand strategist, i think there were many things that were great and positive about him, but i think his life can also be read as a catalogue of what you should not do as a grand strategist, and i tried to talk about both aspects of that in the book. >> host: his personalizations, of foreign policy and the confluence of the two things, things that would make formulating a grand strategy hard to do. >> guest: absolutely. >> host: because has governments change a