I met with many of - a number of [Syrian] refugees in Berlin the other day, and I was struck by how educated, intelligent, and patriotic they are. They want to go back. They love their country. And there are so many of them still in Jordan and in refugee camps in Lebanon and in Turkey, that if you could create the climate within which they could begin to come back, I believe there is such a history of secularism within Syria, even tolerance within Syria, that if we can deal with ISIL, yes. That's the key. And with ISIL there, not a chance.

We should not allow a tiny minority of shoddy scientists and science and extreme ideologues to compete with scientific facts.

America has not led but fled on the issue of global warming.

Sunni are the majority of the [Syria], 60 to 65 percent. They've been ruled by [Bashar] Assad, who represents a minority Alawite element, which is about 12, 13 percent. And because of the choices Assad made, it's very difficult to see how you resolve this without buy-in from the Sunni world.

President Obama has made it his mission that we welcome our troops home with care, and concern, and the respect they deserve. That is how an exceptional nation says "thank you" to its most exceptional men and women.

I've met foreign leaders who can't go out and say this publicly, but boy, they look at you and say, you've got to win this, you've got to beat this guy, we need a new policy, things like that.

What we need now is not just a regime change in Saddam Hussein and Iraq, but we need a regime change in the United States.