I don't think we do a great job in America any more of distinguishing between campaigns and governance. We live in an environment that's all campaign all of the time and it's helpful, now that we've moved beyond a campaign and an election to get into a governance posture.

There are two ways that you can go wrong in our long-term fight against jihadis. One would be to not acknowledge that terrorism and especially jihadi-motivated terrorism, comes from specific places in the world and is connected to specific ideologies. But another way to fall off a cliff and harm our long-term interests would be to imply that the U.S. is at war with Islam.

Once we affirm the goal of trying to make sure that you don't have jihadis infiltrating terrorist flows, we need to make sure we're doing it in a thoughtful way that's thinking about the 10 and 15 and 20 years long battle we're going to have against jihadists.

We obviously have to honor the commitments that have been made to the people who are already retired or near the retirement age. But we need to tell the truth about the fact that when we set the retirement age at age 65 in America, life expectancy was only 62.

We should vigorously debate policy differences. We have too much all-or-nothing in American politics.

I think the category of perpetual adolescence, it's a new thing, and it's a dangerous thing. Adolescence is a pretty glorious concept. It's about intentionally transitioning from childhood to adulthood. Being stuck in adolescence - that's a hell. Peter Pan is a dystopia, and we forget that.

I don't understand what the president's [Donald Trump] position is on Russia. But I can tell you what my position is on Russia: Russia is a great danger to a lot of its neighbors, and [Vladimir] Putin has as one of his core objectives fracturing NATO, which is one of the greatest military alliances in the history of the world.