When you question a man's motives, when you say they are acting out of greed, they are in the pocket of an interest group, et cetera. It's awful hard to reach consensus. It's awful hard to reach across the table and shake hands. No matter how bitterly you disagree, though, it is always possible if you question judgment and not motive.

The caliphate will have been dismantled. It will still be a problem, but that has been our focus because that is the greatest existential threat to U.S. interests.

As you probably know, some American politicians and American journalists refer to Washington, DC as the "capital of the free world." But it seems to me that Brussels, which boasts 1,000 years of history and which serves as the capital of Belgium, the home of the European Union, and the headquarters for NATO, this city has its own legitimate claim to that title.

I've been saying for the last nine years, our power comes as much from - our respect in the world comes as much from the exercise of our power as it does from the power of our principles.

I always judge people who spend a lot of time in public office say they care about things, if the day after they leave, they no longer talk about them, then I don't think they cared much about them.

I don`t know what Donal Trump motive is but I know what he`s preaching is a very, very dangerous brew for America. Is this just a guy doing Celebrity Apprentice for himself? Is this just a guy who`s an entertainer? It may have started there but I now think he wants to be president. Also, I don`t think there`s much chance of that.

There's no reason the nation of Africa cannot and should not join the ranks of the world's most prosperous nations in the near term, in the decades ahead. There is simply no reason.