I have no regrets whatsoever that I have acted in a way to advance my country's interests

I was working with a number of African heads of state. And after their initial surprise, I think many of them just treated me as they would anybody else. They had to deal with me as a representative of the United States of America, and the United States of America was too important to be dismissed or ignored on any grounds.

I think it's very, very important that in foreign policy and national security decision making, as in any other realm, that there be a range of diversity that reflects the full complexity of America. We should draw on those experiences to inform our decision making.

Governing is different than campaigning, and that comes with a whole different level of responsibility.

I read a ton of paper every day. I read the newspapers, I read my intelligence materials, I read all the briefing materials. I read the newspaper in hard copy.

President Obama has got the most moderate temperament.

If we are to garner sustained U.S. domestic support for future trade agreements, we have to make sure those Americans who have suffered as a consequence of past agreements have an effective social safety net, adjustment assistance, opportunities for retraining and new job creation that enables all Americans to thrive.