There are lots of secretaries who send off special envoys and yes, say, "Do a great job," and that's fine until it costs you something. And then they cut you off.

I believe the liberal international order is under assault from Russia, and from other authoritarian regimes, and it is being questioned from within the West by nationalists, by nativists, and by people who doubt our - doubt the values of the West. We've gone through periods like this before; in the '70s, after Vietnam and Watergate, and certainly in the '30s, when people thought liberal democracy was dead, and the future belonged either to the fascists or the communists.

America's security and prosperity didn't work unless other nations were also secure, and prosperous. There had to be something in it for them, so we weren't looking simply to grab territory, or widen our sphere of influence, or anything like that. We wanted to make the world a better place, and get very rich in the process.

There is nothing wrong when the Trump administration says it wants to find areas of common ground to work with Russia - perfectly reasonable. The question is, are you willing to pay the Russians in advance for the privilege of working with them in areas that are supposed to be of common interest, and that - I don't see the American interest in doing so.

In my view, [Vladimir] Putin despises the West in general and the United States in particular, both for who we are, our liberal values, and for what we`ve done, which is to take down the Soviet Empire.

Realism as a foreign policy doctrine means basically you don't care about values; you consider them a luxury, and it leads to a kind of acquiescence in spheres of influence. Now, spheres of influence sound good if you're a graduate student, or a certain kind of - an academic with a certain habit of mind. But in fact, spheres of influence don't work out very well, certainly not for the victims, and there are always victims.

9/11 was a genuine trauma, and President George W. Bush rallied the country. I think the Iraq war was ill-considered, but there - it was done in the wake of a national trauma. And that the errors made under such circumstances are different than errors made in the cold.