I'm a historian by training and by conviction. And so the thing that has throughout informed my thinking about international relations is history. I think, for example, the reason that I was perhaps able to see sooner than some others that the Soviet Empire in Eastern Europe was decaying--if not disintegrating--was that I came to it through history and through Germany, rather than through Sovietology and through Moscow. And therefore the starting point was that no empire in history has lasted forever, and this one won't either.