Alexei Navalny, the opposition politician who has led anti-corruption protests, had a blog about a credit line to a company owned by Vladimir Putin's son-in-law, $1.75 billion from Russian state funds; this is one transaction. Putin controls more money directly and indirectly than any individual in human history.

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.

Chess strength in general and chess strength in a specific match are by no means one and the same thing.

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.

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.

Chess is mental torture.

The stock market and the gridiron and the battlefield aren't as tidy as the chessboard, but in all of them, a single, simple rule holds true: make good decisions and you'll succeed; make bad ones and you'll fail.