I believe more than ever, machines will put new challenges, and that means we'll have to be more creative and more human, because that's the way to make the difference.

I have great energy and I have great tasks ahead of me.

I'm not trying to give any definite answer. What I'm trying to prove is that we have enough gaps, enough discrepancies, enough simple falsifications to conclude that probably this history was an invention of a later time.

I believe more than ever, machines will put new challenges, and that means we'll have to be more creative and more human, because that's the way to make the difference.

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.

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.

I would not draw definitive conclusions from that. If we look at South and North Korea, it is pretty hard to believe that we're dealing with the same people. Half of the people are forced to live in a concentration camp; the other have created one of the most dynamic economies in the world.