So, in Russia all the cards will work, nothing is changed here (despite the statements of Visa and Mastercard). Cards issued by Russian banks would stop work abroad. The same is true for any foreign cards in Russia. So, foreigners in Russia are fucked. People who left Russia in a hurry because they didn't want to be part of this craziness or because it's dangerous for them to stay (i.e. they are known protesters against the regime) are fucked.
Nice move. Simply genius.