I do not remember when I said this [oil production would collapse ], maybe in the heat of the moment, but I do not think I even said it, but I may just not remember it. I was saying that at a certain level of oil prices new deposits will not be explored. That is what is actually happening. However, surprisingly, our oil and gas workers [mainly oilmen] continue to invest.

No one doubts that poison gas was used in Syria. But there is every reason to believe it was used, not by the Syrian Army, but by opposition forces to provoke intervention by their powerful foreign patrons, who would be siding with the fundamentalists.

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.

We have a contract for the delivery of the S-300s. We have supplied some of the components, but the delivery hasn't been completed. We have suspended it for now. But if we see that steps are taken that violate the existing international norms, we shall think how we should act in the future, in particular regarding supplies of such sensitive weapons to certain regions of the world.

The level of our political trust [with China] is also very high. We have similar positions on major international issues or even, as diplomats say, our views are identical. We often have shared positions on key issues of the modern international agenda.

Prisons where people can't even work is the worst punishment you can think of. And I don't think we should put all convicts in such facilities where people are deprived of their freedom.

Nobody should have any illusion about the possibility of gaining military superiority over Russia. We will never allow this to happen.