You have social media and the Internet and immigration and so, suddenly, cultures are clashing and people feel as if they're less familiar with the people around them. That causes social anxieties.

I've just concluded that for me personally it is important for me to go ahead and affirm that I think same-sex couples should be able to get married.

Starting today, we must pick ourselves up, dust ourselves off, and begin again the work of remaking America.

You wouldn't know that if you talked to Human Rights Watch or Amnesty International or some of the international activist organizations. Certainly you wouldn't know that if you were talking to some of the writers who criticize our drone policy. But I've actually told my staff it's probably good that they stay critical of this policy, even though I think right now we're doing the best that we can in a dangerous world with terrorists who would gladly blow up a school bus full of American kids if they could.

The point is ISIL leaders cannot hide. And our next message to them is simple - you are next.

How you staff, particularly the chief of staff, the national security adviser, your White House counsel, how you set up a process in the system to surface information and generate options for a president, understanding that ultimately the president is going to be the final decision-maker. That's something that has to be attended to right away.

I have always had extraordinarily good relations with very conservative colleagues. And that's not because I agree with any of them or fudge on my positions, but people feel I listen to them and give them the benefit of the doubt. I assume the best of people. And that, I think, is an attitude that is maybe rare in politics.