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.

History tells you if dictators are not stopped in time, they cause more damage.

Learning from our mistakes is critical for improving, but even I don't have patience for ranking my regrets. Regret is a negative emotion that inhibits the optimism required to take on new challenges. You risk living in an alternative universe, where if only you had done this or that differently, things would be better. That's a poor substitute for making your actual life better, or improving the lives of others. Regret briefly, analyze and understand, and then move on, improving the only life you have.

One lesson is to not to play desperately if your position is worse but still reasonable. Lashing out wildly in an inferior position usually only hastens defeat. Meanwhile, solid, stubborn defense can demoralize the attacker, make him lose confidence. When that happens, the tables can turn. Keep fighting, stay steady, keep morale high - and public protests are good for all of these things.

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.

Perfectly correct chess exists only in theory.

Where do poor young people turn? ISIS has a mission for you to change the world! It's a horrific vision, but it's a vision. Perhaps for white supremacists, you can add the additional storyline that they believe that they are having something taken from them by outsiders, by immigrants. Not only are they losing out and bored, but they think they are victims and that they know who is responsible.