We think we're near energy independence - nothing could be further from the truth. We're in much better shape now, but the price of a barrel of oil is going to be controlled by the Middle East for the next 10, 20, 30 years for sure.

The single biggest existential threat that's out there, I think, is cyber.

We have to stop the killing. We need to let the refugees - we need to let Syrian citizens go home.

I think the central mission in Afghanistan right now is to protect the people, certainly, and that would be inclusive of everybody, and that in a, in an insurgency and a counterinsurgency, that's really the center of gravity.

If the untimely battlefield deaths of generations of American heroes have taught us nothing else, it should be this unalterable fact: what you do with your time here on earth is far more important than the time you had to do it. Those who live most are those who love most, who act the noblest and do their best.

The best day was when we got bin Laden.

We can't kill our way to victory, and no armed force anywhere - no matter how good - can deliver these keys alone. It requires teamwork and cooperation.