I wouldn't place much stock in numbers. I don't believe that they reflect Putin's true popularity. Just think about how the pollsters proceed. They call people and they ask them questions on the street. In today's Russia, it takes a lot of courage to tell a stranger something critical about the head of the Kremlin. And yet more than 20 percent do so nonetheless.

Vladimir Putin has this animalistic instinct of all dictators: He smells weakness. To quote Winston Churchill's definition of appeasement: "An appeaser is one who feeds a crocodile, hoping it will eat him last."

There is no one that can share your responsibility. It it is your responsibility you must carry it on and you must be responsible for your actions. At the end of the day we all are being challenged, sooner or later, by our destiny. And it's up to us to make all the difference in this life. If not you, who else?

Like Dvoretsky, I think that (all other things being equal), the analytical method of studying chess must give you a colossal advantage over the chess pragmatist, and that there can be no certainty in chess without analysis. I personally acquired these views from my sessions with Mikhail Botvinnik, and they laid the foundations of my chess-playing life.

When I was on an American show in 2015, I tried to talk about the threat Vladimir Putin posed to the free world. The interviewer said, "Wake me up when he takes over Poland." We heard something similar from years ago and we ended up with World War Two. Putin decided to skip Poland and went straight to Wisconsin. Putin is at war, a hybrid war, with the free world. His domestic propaganda is based entirely on a strong man challenging the free world. When the demonstrations around Russia began, the harsh response was because it was more important to show strength.

Vladimir Putin is the bigger danger than Donald Trump because Trump can be dealt with within American democracy. There is an independent judiciary. He cannot overrule American courts. He will have to play by some rules. He will do damage certainly, but to do real damage I think he is too weak. Putin is aggressive wherever he can be. In Europe, in Germany, Putin will not stop.

Revenge for a terror attack is ideal for Putin's model. His propaganda machine will be filled with scenes of crash victims if [Vladimir] Putin sees the need for a larger war to stoke his domestic support again as the Russian economy teeters.