Russia sets ceiling for exchange rates to prevent a crash: 101 rubles for 1 euro, 90 rubles for 1 U.S. dollar. I don't if this will work. Hyperinflation and flight to some alternative currency. Crypto, maybe the Euro, even the Dollar. China manipulates the CNY and RMB but they are much wealthier than Russia, have collective economy and Yuan is a more stable currency than Ruble.