Basically what it comes down to is that this move will completely destroy trust in western financial system. If the west starts seizing foreign assets without any legal basis, then keeping money in western banks starts being a huge risk.
archived https://archive.ph/LAc9J
At the point of another Great Crisis and i absolutely bet on the hard ass conservatists trying to base at least some of currency on gold again, especially if the petrodollar blows up in the meantime.