I believe that in fact it would be economically reasonable and logical to reach a compromise [on oil production], I am sure that everybody understands this.

We have never meddled in the domestic affairs of any state and we never will.

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.

It's better not to argue with women.

Respecting the sovereignty means preventing coups, unconstitutional actions and illegitimate overthrowing of the legitimate government. All these things should be totally prevented.

Mohammed bin Salman is deputy Crown Prince, but this is not so important. He is a very active statesman, we have really warm relations. This is a person who knows what he wants and can achieve his goals. At the same time I consider him to be a reliable partner with whom one can negotiate and be sure that agreements with him will be implemented.

Back in 1956, we signed a treaty and surprisingly it was ratified both by the Supreme Soviet of the Soviet Union and the Japanese Parliament. But then Japan refused to implement it and after that the Soviet Union also, so to say, nullified all the agreements reached within the framework of the treaty.