Russia will need to buy $80billion in BTC to cover for the trade balance sheet imports. That would also imply its remaining trading partners will accept BTC.
It would be totally stupid buying 80 billion in BTC since there is not that much available on exchanges and will need to keep buying at prices of 500k and 1million USD if so much Rubble or foreign exchange held by Russia finds an entrance to exchanges or any OTC desks.
It could buy a few million here and there, and those selling will get visits from the feds.
They will not do that for sure, that is just way too much money, but do not tell me it is impossible neither. I mean of course you can't do that all together, but like 100 million a day? That would not be impossible to hide, and considering the main export of Russia is hiding information and stealing it from others, I would say that putting up 100 million a day should not be a big deal. That would not cover all of it, so they would have to do big numbers once in a while, but it is really not impossible to get like 5-10 billion out in the next 3 months, and maybe even 20 billion or so by the end of the summer. That is not all of it, but it is not zero neither.