MOSCOW, January 19. /TASS/. What Deputy Chairman of the Russian Security Council Dmitry Medvedev said about nuclear powers’ involvement in conflicts is fully in line with Russia's nuclear doctrine, Kremlin Spokesman Dmitry Peskov noted.

When asked if Medvedev’s statement marked a change in the nuclear doctrine, Peskov said: "No, it absolutely does not mean that, it is fully in line with our nuclear doctrine."

"Read the nuclear doctrine, there is no contradiction there," Peskov stressed.

Earlier on Thursday, Medvedev wrote a post on Telegram, commenting on statements made at the World Economic Forum in Davos that "Russia must lose" in Ukraine. According to the deputy chair of the Russian Security Council, nuclear powers don’t lose in major conflicts on which their future depends and it should be clear to any Western politician. "It doesn’t occur to [Western politicians] to draw <...> the most obvious conclusion that a nuclear power’s defeat in a conventional war may trigger a nuclear one. Nuclear powers have never lost major conflicts that their future depends on," Medvedev pointed out.