I would not use American ground forces in Syria. I think that would be a very serious mistake. I don't think American troops should be holding territory, which is what they would have to do as an occupying force. I don't think that is a smart strategy.

I think we need to go after Baghdadi, as well, make that one of our organizing principles. Because we've got to defeat ISIS, and we've got to do everything we can to disrupt their propaganda efforts online.

I feel like I have to do the best job I can to basically say, "OK, I understand - you have every right to be angry, but anger is not a plan. Here's what I want to do, and that's why I hope you will support me, because I think it will actually improve the lives of Americans."

We spend trillions of dollars to travel around the world, but it's in everybody's interest that we have a better framework, and not just for the United States but for the entire world, in which to operate and trade.

We saw more evidence that [Doanld Trump] is temperamentally unfit and totally unqualified to be commander-in-chief. He trash-talked American generals, saying they had been, quote, "reduced to rubble," that's how he talks about distinguished men and women who have spent their lives serving our country, sacrificing for us. That's how he would act as commander-in-chief.

You know, I'm going to start thanking the woman who cleans the restroom in the building I work in. I'm going to start thinking of her as a human being.

With all due respect, the fact is we had four dead Americans. Was it because of a protest or was it because of guys out for a walk one night who decided they'd go kill some Americans? What difference, at this point, does it make? It is our job to figure out what happened and do everything we can to prevent it from ever happening again.