I think it was even on reuters but it was one of these "reportedly" news, you never get a clear source. But it's not farfetched that is going on. In any case I would frontrun this by owning some BTC myself before it's confirmed just to have a position.
So Putin holds a wallet with 1000000 BTC? An XI another?
Wallets are made to have on or several people in charge. Not that a state can't do that but ist not highly likely.
Once the transfer coins they find out its pretty costly to pass around 500 BTC.