In my opinion, this could throw BTC in a black hole, as US and Europe would be forced to ban or regulate it to death. (Quickly)
i don't even think bitcoin will fall into a black hole if Russia fully adopts bitcoin and makes it legal tender like el Salvador. Currently, it is not only Russia that is trying to take advantage of Bitcoin, but countries such as the US and Europe are also competing to take advantage of Bitcoin. Bitcoin can no longer be destroyed, Bitcoin will be the safest place for countries that receive financial sanctions from international countries.
Bitcoin adoption will gives positive impacts to the bitcoin.Meanwhile Russian will do research about the bitcoin for sure.If they do adoption of the coin,it leads to the new investors from the Russia.In Russia,huge people had enough high money,So if bitcoin get the new adoption and huge investment from Russian.Surely we able to get the high value of bitcoin in short run.