Since the U.S. has already changed it's nuclear war doctrine to a 1st strike strategy it should not surprise anyone that the Russian's would have to do likewise. If you recall during the so-called Cold War both sides used the MAD (Mutually Assured Destruction) doctrine and luckily it worked . . . . neither side launched a nuclear strike because it was assured of also being destroyed.
But it seems the U.S. neocons in the ensueing years became convinced that we could survive a retaliatory strike from the Russians so they came up with First Strike. It seems to me that if Mutually Assured Destruction was MAD then what the intelligensia in Washington and the Pentagon have come up with is even MADDER. President Eisenhower (who as you recall was a five star general before his election to the presidency) warned us to beware of the military industrial complex in the 1950s . . . . I guess noone listened.
TPTB seem to believe that too much peace is not a good thing.