Dictatorships can exist with free markets - not that China is really a free market - especially in poor countries where the regime insists that it's a choice between food and liberty, a false choice. But increasing affluence will inevitably result in political pressure.

I have some strategical vision, I could calculate some few moves ahead and I have an intellect that is badly missed in the country which is run by generals and colonels.

Boris Nemtsov and I began to argue after Putin's return to the presidency in 2012. In my opinion, there was no longer a realistic chance to achieve regime change through peaceful political means, or real elections. Boris, on the other hand, never lost this hope. He felt that my assessment was premature and said: "You have to live a long time to see changes in Russia." He was deprived of that opportunity.

Inevitably the machines must win, but there is still a long way to go before a human on his or her best day is unable to defeat the best computer.

Though I would have liked my chances in a rematch in 1998 if I were better prepared, it was clear then that computer superiority over humans in chess had always been just a matter of time.

You know, if I'm in a bad mood, I always look at the chessboard, just to find something that can cheer me up.

Recognise that the free world is at war with Putin, and America is the leader of the free world and should build the coalition against him. It is similar to what Harry Truman did in the Forties. They have to oppose the threat that comes from Putin and other dictators.