If war does break out, you really don't care if Russia wins or NATO wins. The world will be a big loser.
And it doesn't matter if your wealth is in bitcoins or in gold, there is a chance that you may not be alive to enjoy it.
Its not like they'd bomb just about any city. if there are to be bombed its usually the military camps. But will bitcoin have a good value if somehow a war broke and every country takes sides already to go war?