The American people are pretty impressive in their ability to keep after something if they think it is doable.

The only way you can be comfortable about Donald Trump's foreign policy, is to think he doesn't really mean anything he says.

If a cat sits on a hot stove once, it will never sit on a cold one either.

NATO is still the most remarkable alliance in history. It stuck together through 40 years of Cold War, and it then joined together to fight in Afghanistan. In the 1980s, I would not have thought this was going to be possible.

I've met quite a few dictators up close and personal in my life.

I wish there were somebody I could be comfortable voting for. I might have to vote for Hillary Clinton, even though I have big reservations about her.

I think Obama sees everything through one lens. Doing nothing in the face of the slaughter in Syria is not only shameful, it is unrealistic. This approach leaves Syria as a broken country and a breeding ground for extremists for decades.