The only way you can be comfortable about Donald Trump's foreign policy, is to think he doesn't really mean anything he says.

One of the things that ultimately led me to leave mathematics and go into political science was thinking I could prevent nuclear war.

It would be a huge mistake to abandon democracy promotion. Peaceful political change has been enormously successful in the past years in Eastern European countries as well as in countries like South Korea, South Africa, Chile and Indonesia. However, if possible, the use of force is something to avoid except in cases where genocide is threatened, like Bosnia or Libya or with regimes that threaten our security, like the Taliban and Saddam Hussein.

People change their habits. I know Americans who don't go to Paris because they think it is too dangerous.

Sometimes corruption is slowed by shedding light into what was previously shadowed.

I like globalization; I want to say it works, but it is hard to say that when six hundred million people are slipping backwards.

Our security depends on having good relationships with our allies. Donald Trump mainly shows contempt for them.