Set up a bank account in Russia and deposit dollars or euros to be converted to rubles.
Alternatively - use Gold or Bitcoin. I guess they have suggested this too from what I read somewhere. Wonder if they already have ways to make it work well and safely.
Could be done with Bitcoin if the Network has already implemented a decentralized mechanism for keeping the price safe from extreme volatility, which I believe can be done easily. The price movement needs to be gradual even when there is too much demand that can cause it to move up too quickly... with excess Bitcoin reserved for future use or for putting back into circulation. You may also increase the price with the reserve when there is less demand.
I think Good development or things that could create demand should always make the price move up.
By the way, I if the conversion from Bitcoin to a Ruble Stablecoin for example is done quickly there probably won't be much issues. I would hold at least 3% of the Bitcoin used by Russia customers to purchase gas if I were Russia
