US Treasury Sanctions Iran-Linked Wallets, Tether Freezes $131 Million USDT

The U.S. Treasury expanded sanctions on Iran's central bank to include four crypto wallets, prompting Tether to freeze $131 million in USDT. This brings total frozen USDT in the cluster to about $475 million, highlighting geopolitical risk intersecting with digital asset market infrastructure and the operational power of stablecoin issuers.