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.
War can kill Bitcoin and if there would be shortage of food it would be nearly impossible to pay foods with Bitcoin as many farmers (especially in my own country) are right now still not into cryptocurrency. There would be no power and certainly no internet so exchange of Bitcoin can be virtually impossible. Personally, I feel that soon we can be experiencing another global war as there are now many factors already in placed. Russia is not as naive as the USA and it is now preparing to go to war anytime.