Considering Russia is one of the strongest player in the crypto space I wouldn't be surprised if they pull out something cool!
We will all see a first change from the back-end side, to have high monitoring and reduce black money transfers as well as general fees for final users. The war will be few years later, when the base will be fixed and created. But, I think it will be a huge, big show!
True but the whole point is decentralization. how do you monitor something like that? Also, what's to say they you don't format a program with an algorithem to do multi VPN p2p account transfers over a given time? Or even transferring via trades? You could potentially do that quite easily with a very low alt coin. With the vast availability of blockchain. I definitely think they will have their hands full for a few years/decades to try and crack or monitor all blockchains at once.
Well being decentralise it doesn't mean you are fully anonymous... with Dash or Monero yes, but think about ETH o BTC, you can see all transactions that have been made from an account. If you connect that via a VPN the wallet still the same. I guess they will do a KYC on the wallet, as they know that a specific bank account is connect to you. I guess at that point they will create a country ethereal-base blockchain where they keep track of the people's wallet and get your taxes automatically from that. Regarding the anonymous it's true, if you want you can do it, but it's the same even today if you want to open a bank account in an offshore jurisdiction.