But we must not forget the effort undertaken by the ruling elite in Russia to manipulate Western politicians, businessmen as well as journalists. That's why [Vladimir] Putin's "fifth column" is that powerful in the West.

Chess is mental torture.

Donald Trump is a catalyst. People care now in a way they didn't. The American institutions were rusting; now they are being revitalised. Trump is a lightning rod. They are getting engaged and the American liberal media that spent too much time on PC issues can focus on Vladimir Putin and Recep Tayyip Erdogan.

The worst enemy of the strategist is the clock. Time trouble... Reduces us all to pure reflex and reaction, tactical play. Emotion and instinct cloud our strategic vision when there is no time for proper evaluation.

It was not about losing my mental power; it's about not feeling good about my contribution to the game.

Nervous energy is the ammunition we take into any mental battle. If you don't have enough of it, your concentration will fade. If you have a surplus, the results will explode.

I have some security that could protect me against provocations but of course there are more terrible actions that could not be stopped by any security.