We don't know the risk ahead and it's unpredictable how the government imposes the law about financial matters, we shouldn't put a large amount on the centralized exchange, in a moment like this was unexpected to happen.
Be your own bank always and always remember the golden rule in crypto, "Not your keys, not your coins".
Safe haven? I don't know technically how they will buy Bitcoin right now, if someone from Russia here wants to trade or that will buy Bitcoin via P2P would be better but in certain centralized exchanges, they were already sanctioned by the US.