I hate the tribal hatred thesis - in Yugoslavia and Rwanda and places like that they kill each other because that's just what people do there. I think it's profoundly ignorant. I was astonished when Samuel Huntington wrote his famous clash of civilizations essay in response to the Yugoslavian war. I was on the streets in Sarajevo and every other person I met came from a mixed marriage. And here is Professor Huntington from Harvard writing this is a clash of civilizations. That was absurd.