The growth of violent extremism is partly a consequence of how the developed world has become complacent and defensive about its own greatness and ambition.

I say we should praise Donald Trump for existing and for winning, because it has woken people up. For many years, I have been trying to say to Europeans, and especially to Americans, that Vladimir Putin is a problem for the world. And they have swatted me away. "It's your problem, we have our democracy." Suddenly, because of Trump, they are learning about separation of powers, independence of the judiciary and that Ronald Reagan was right when he said, «Freedom is never more than one generation away from extinction».

Ratings are king and the money keeps flowing, and partisanship is so strong today that people rely on a few sources absolutely instead of thinking critically. So even being a cheerleader for a gameshow-host president with no respect for the rule of law or America's reputation in the world may not be a career-ending move.

There is no doubt that [Vladimir] Putin is responsible for this crime, whether or not he gave the order to commit the murder [of Boris Nemtsov] himself. Putin created the conditions and atmosphere that have made this kind of thing possible.

The highest Art of the Chess player lies in not allowing your Opponent to show you what he can do.

Vladimir Putin likes Donald Trump because he supports this view of the world, that the big guys can carve it up, sit and talk about the world, carve up the countries, shape borders. For Putin, treaties, alliances, Nato, the EU are stumbling blocks.

You're always going to have dangerous, disaffected people in any society, and some will be violent. Increasing prosperity and reducing inequality won't solve that completely. But having big, positive dreams and a society that makes it possible to achieve those dreams is what we must strive for.