Russia will allow exchange trading of Bitcoin starting November 22, but the Moscow Exchange, Russia’s largest exchange, remains under U.S. sanctions. Buyers will be able to trade only Bitcoin, Ethereum, and Tether (USDT). Retail buyers must pass a test and may spend no more than 300,000 rubles a year, or about $3,630. Tether complies with U.S. sanctions when freezing wallets and previously froze funds linked to a sanctioned Russian exchange. Traders worry that sanctions could push prices on the Moscow market below global prices.