I'm not saying that George W. Bush did everything right. But even if you take a skeptical view of his Iraq war, [Barack] Obama made the more serious error of withdrawing his troops from Iraq early.

Enormous self-belief, intuition, the ability to take a risk at a critical moment and go in for a very dangerous play with counter-chances for the opponent - it is precisely these qualities that distinguish great players.

When [Vladimir] Putin, a former lieutenant-colonel in the KGB, became Russia's president on December 31, 1999 - eight years after the failed coup attempt against (then Soviet leader Mikhail) Gorbachev, and eight years after the people had torn down the statue of Felix Dzerzhinsky, the hated founder of the KGB, in Moscow - it was admittedly a shock. Nevertheless, I decided to give Putin a chance. He seemed dynamic and capable of learning. But I had to bury my hopes after just a few months. He proved to be an autocrat - and, because the West let him do as he pleased, he became a dictator.

[Vladimir] Putin needs wars to legitimize his position.

Many politicians in the West cling to the notion of a partnership with Russia. They want to include [Vladimir] Putin, make compromises and constantly negotiate new deals with him. But history has taught us that the longer we pursue appeasement and do nothing, the higher the price will be later on. Dictators don't ask "Why?" before they seize even more power. They ask: "Why not?"

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.

It is quite difficult to establish a clear-cut cause-and-effect relationship, as the causes are manifold and closely connected. It is simply not correct to link the level of democracy to prosperity. It is absolutely clear that the economic wealth of Saudi Arabia exceeds the performance of the Czech Republic. But apparently democracy is quite stable in the Czech Republic, which cannot be said about Saudi Arabia. As we delve into the past, we must not forget about the existing model of society.