Even as we implement the nuclear deal and welcome our Americans home, we recognize that there remain about differences between the United States and Iran. We remain steadfast in opposing Iran's destabilizing behavior elsewhere, including its against Israel and our Gulf partners and its support for violent proxies in places like Syria and Yemen.

Of course, there is no question that Libya - and the world - will be better off with Gaddafi out of power. I, along with many other world leaders, have embraced that goal, and will actively pursue it through non-military means. But broadening our military mission to include regime change would be a mistake.

I think it's fair to say that [Donald Trump] and I are sort of opposites in some ways.

We proved that we are still a people capable of doing big things and tackling our biggest challenges.

Like it or not, we have to have a financial system that is healthy and functioning.

Short term, the most important thing is to put people back to work ... If they're working, that means they're paying taxes, that means that they're buying goods and services - and the economy, instead of being on a downward spiral, starts back up on an upward spiral.

If 90 percent or 95 percent of those - chemical stockpiles [in Syria] were eliminated, that's a lot of chemical weapons that are not right now in the hands of ISIL or Nusra or, for that matter, the regime.