Right now - and this is something Donald [Trump] has supported, along with the gun lobby - right now, we've got too many military- style weapons on the streets. In a lot of places, our police are outgunned. We need comprehensive background checks, and we need to keep guns out of the hands of those who will do harm.

We have to do more about addiction, not only drugs, but also alcohol.

It is, from my perspective, less important today looking backwards as to why these militants decided they did it than to find them and bring them to justice, and then maybe we'll figure out what was going on in the meantime.

I think talking's important. I think aspirations are critical.

We also have to intensify our air strikes against ISIS and eventually support our Arab and Kurdish partners to be able to actually take out ISIS in Raqqa, end their claim of being a Caliphate.

You [Donald Trump] call yourself the King of Debt. You talk about leverage. You even at one time suggested that you would try to negotiate down the national debt of the United States.

I prepared to be president. And I think that's a good thing.