The Prime Minister [Shindzo Abe] and I will negotiate proceeding from our national interests: the interests of Russia and the interests of Japan. We should find a compromise.

I consider the decision of my colleagues and friends to be the best birthday present.

Above all, we should acknowledge that the collapse of the Soviet Union was a major geopolitical disaster of the century. As for the Russian nation, it became a genuine drama. Tens of millions of our co-citizens and co-patriots found themselves outside Russian territory.

Russia and the United States are the biggest nuclear powers, this leaves us with an extra special responsibility. By the way, we manage to deal with it and work together in certain fields, particularly in resolving the issue of the Iranian nuclear programme. We worked together and we achieved positive results on the whole.

Opposition can be useful. Every opposition movement is good and useful if it acts within the law... If there are people who act outside the law, then the state must use legal means to impose law in the interests of the majority. That's the way it's done in the U.S. and that's the way it's done in Russia.

The nationalists' coup in the Ukrainian capital of Kiev in February 2014 has hugely scared 2.5 million Russian people living on Crimea. So what did we do? We have not gone to war, we have not fired, not a single person was killed. Our soldiers have merely prevented the Ukrainian troops on Crimea from impeding the freedom of expression of the people.

Russia is the biggest country in the world. It would be very difficult to surround it, and the world is changing so fast that it would basically be impossible, even in theory.