We know he's been absolutely devoted to trying to acquire nuclear weapons, and we believe he has, in fact, reconstituted nuclear weapons.

In terms of asking questions, I plead guilty. I ask a hell of a lot of questions. That's my job.

We've gotten a long way on missile defense. We know how to do it. We know how to take down incoming warheads, but we need to do a lot more work in order to be - to deploy a system that'll defend the United States against those kinds of limited strikes that might be possible by a nuclear armed North Korea or Iran.

The important thing here to understand is that the people that are at Guantanamo are bad people. I mean, these are terrorists for the most part. These are people that were captured in the battlefield of Afghanistan or rounded up as part of the Al Qaeda network. We've already screened the detainees there and released a number, sent them back to their home countries. But what's left is hard core.

Oil remains fundamentally a government business. While many regions of the world offer great oil opportunities, the Middle East with two-thirds of the world's oil and the lowest cost, is still where the prize ultimately lies, even though companies are anxious for greater access there, progress continues to be slow.

We know he's been absolutely devoted to trying to acquire nuclear weapons, and we believe he has, in fact, reconstituted nuclear weapons.

We were trying to get all of the planes down out of the sky. And we watched as the towers of the World Trade Center collapsed - something no one expected and anticipated. And you could sit there and see and be aware that thousands of people were at that moment being killed as a result of the terrorist attacks that struck the United States.