The reality is, the United States has global interests. Our defense budget is about the same as the defense budgets or military budgets of every other country in the world put together.

I have tried to maintain civil relationships with everyone I meet - and, even if I violently disagree with them, try to be respectful.

Defense is not like other discretionary spending.

I'm a big advocate of drones.

There's a lot of books out there about how you lead change in business, but I've certainly not seen any... on how you do that in public institutions.

Well, Israel, obviously, thinks of the Iranian nuclear program as an existential threat to Israel.

I think in the context of senior government positions, I think an anecdote of what I told President-Elect Barack Obama when we had our first meeting. And I said, "You don't know me. Can you trust me? Why do you think you can trust me?" and so on. But at the end, I said, "You can count on me to be loyal to you. I will not leak. I will keep my disagreements with you private. And if I cannot be loyal, I'll leave." Loyalty means doing what you think is in the best interest of that person as well as the country.