When I was the director of Central Intelligence in the early '90s, I tried to get the Air Force to partner with us in building drones. And they didn't want to, because they had no pilots.

The United States has been a global power since late in the 19th century.

I mean, when you get down to very low numbers of nuclear weapons, and you contemplate going to zero, how do you deal with the reality of that technology being available to almost any country that seeks to pursue it? And what conditions do you put in place?

It's a very broad and not very well-disguised effort of Russians to create questions about the legitimacy of these Western elections. And, I think, this is very K.G.B.

Things have gotten so nasty in Washington.

I had no difficulty as Secretary of Defense moving from the Bush administration to the Obama administration.

You know, if I were an - if I were a Taliban, I'd say, 'What did al-Qaida ever do for me except get me kicked out of Afghanistan?'