While worrisome, it represents a reversal of the Soviet/Russian “no first strike” policy adopted in the 1980s, but it should be noted that this new policy will not will be effectively identical to that of the US, which has repudiated calls for it to take a “no first strike” policies since the 1980s.
It’s nothing to tear one’s hair out about, unless you are Georgian President Saakashvili, where it might be seen as a shot across the bow towards NATO involvement in the region….But then again, he doesn’t tear out his hair, he chews on his tie.
“In situations critical for national security, a preventive nuclear strike against the aggressor is not ruled out,” he said.
The section of Russia’s military doctrine about the opportunity to use nuclear weapons was formulated to preserve the status of a nuclear power for the Russian Federation. The document states that Russia can apply nuclear deterrence against potential enemies to prevent aggression against Russia and its allies.
I think that the video below puts everything in decent perspective: