I think Barack Obama's foreign policy will be regarded more failure than success.

I think the voters who voted for Donald Trump certainly are willing to tolerate a lot of ugliness, but maybe, if you're in desperate circumstances, or you think America is deeply in trouble, you're willing to tolerate that without necessarily liking it.

A lot of people think Barack Obama should have responded to the Russian hacking of the U.S. elections weeks ago, months ago. So these happened on his watch. There's nothing wrong with him dealing with it.

I think that it's an arguable position, whether with Hamas and ISIS around, whether there should be a Palestinian state, but it's a defensible position, given the current circumstances.

The question is whether Donald Trump recognizes that Vladimir Putin is a bad guy. And I guess there's no indication that he regards Putin as in any way a bad guy.

The North Korean regime is extremely fiery, extremely insecure, sometimes hysterical. And when you're around somebody who's screaming and unstable, the last thing you want to do is add to the instability with your own unstable, hysterical rhetoric.

Our system is not only based on rules, but a series of self-restraints that we won't be as barbaric as we could be in competing for power because we know if we're all barbaric as we could be, the whole country and the whole society falls apart.