Sanctions alone could not stop Iran's nuclear program. But they did help bring Iran to the negotiating table.

[Our troops in Iraq and Afganistan] does give us the ability to make sure that we are strengthening those folk who are interested in building up their countries rather than destroying them, and doing so in a way that is sustainable and doesn't put a constant burden on the amazing men and women that we've got in uniform.

I'll change the posture of our federal government from being one of the most anti-science administrations in American history to one that embraces science and technology.

I am confident that Assad's days are numbered. But what we can't do is to simply suggest that, as Governor Romney at times has suggested, that giving heavy weapons, for example, to the Syrian opposition is a simple proposition that would lead us to be safer over the long term.

We run everything to ground. If you see something, say something. Report your concerns to law enforcement. They will be looked at, they will be reviewed.

The fact is that I'm also friendly with Tom Coburn, one of the most conservative Republicans in the United States Senate, who, during his campaign, once said that it might be appropriate to apply the death penalty to those who carried out abortions.

I can document this past week [of presidency] we've put out memos from every agency showing what did we do. Try to be as honest as possible. There's a little hype involved obviously. It's spin because it's our agencies. We feel some pride about it. But tried to be self-critical as well.