This is not correct. Proposed legislation does not concern foreign currencies at all and is targeted specifically to cryptocurrencies. Foreign currencies and their exchange will still be legal, but any operations in digital currencies will be criminalized. Now, the question of enforcement is still an open one of course. But you won't be able to legally accept BTC in your local business - they'll fine you. And it is expected that access to any websites with bitcoin-related information will be blocked from Russia.