"I think, in fact, the situation with respect to al Qaeda, to say that, you know, that was a big attack we had on 9/11, but it's not likely again, I just think that's dead wrong. I think the biggest strategic threat the United States faces today is the possibility of another 9/11 with a nuclear weapon or a biological agent of some kind. And I think al Qaeda is out there even as we meet, trying to figure out how to do that."