Tether freezes Iran’s funds worth 3440 billion Korean won… Geopolitical weaponization of stablecoins

The world’s largest stablecoin issuer, Tether, has frozen USDT in two wallets suspected of being linked to Iran, totaling $344 million (approximately 480 billion Korean won). The U.S. Treasury Department officially confirmed this, indicating that dollar-pegged stablecoins are being practically used as tools for U.S. foreign financial sanctions.

Two days after Tether’s announcement, the Treasury directly confirmed

Last Wednesday, Tether announced: “We have frozen USDT in two wallets involved in illegal activities.” The announcement did not specify the source of the funds or the wallet owners, only stating that the measure was carried out in cooperation with the Office of Foreign Assets Control (OFAC) under the U.S. Treasury Department.

Two days later, Treasury Secretary Scott Bessent personally stepped forward. He stated on social media that the U.S. government had sanctioned “multiple cryptocurrency wallets associated with Iran,” freezing a total of $344 million in crypto assets. This amount is exactly the same as Tether’s announced figure.

Secretary Bessent did not explicitly mention USDT, but given the matching amount and timing, Tether’s freezing action has been effectively confirmed as part of the U.S. government’s enforcement of sanctions against Iran.

Under the “Economic Firestorm” operation, @USTreasury will continue systematically weakening Tehran’s ability to generate, transfer, and repatriate funds.

The Office of Foreign Assets Control (OFAC) of the Treasury Department is sanctioning multiple wallets linked to Iran—leading to the freezing of $344 million…

— Treasury Secretary Scott Bessent (@SecScottBessent) April 24, 2026

“Economic Firestorm”: Cutting off Iran’s financial chain

Bessent explained that this measure is part of the U.S. government’s effort to supplement the “Epic Firestorm” against Iran’s military and diplomatic actions with an “Economic Firestorm.” As the name suggests, the goal is to implement a “financial strangulation” on the Iranian regime.

The Treasury Secretary stated: “Economic Firestorm is a key tool to systematically weaken Tehran’s ability to raise, transfer, and repatriate funds,” defining it as a means to curb Iran’s military activities and nuclear ambitions in the Middle East. The U.S. government said it will continue monitoring Iran’s international financial flows and cut off all financial lifelines related to the Iranian government.

Divergent views in the crypto community

This incident has sparked sharp disagreements within the crypto industry.

One side sees Tether’s cooperation with OFAC as mature compliance evidence. For stablecoin issuers aiming to enter the regulated sphere, this is a natural step and a move toward long-term sustainability.

The other side argues that this incident starkly exposes the structural fragility of USDT. Issuers can freeze specific wallets and blacklist them at any time, meaning USDT ultimately remains under the same surveillance and control structure as traditional banking systems. The core value proposition of “decentralized dollar” stablecoins is fundamentally shaken.

Some critics also link this incident to concerns about the political weaponization of central bank digital currencies (CBDCs). The fear that national powers could control access to digital currencies has become a reality in the private stablecoin sector.

The US dollar stablecoin becomes a new tool for U.S. sanctions

The significance of this incident goes beyond Iran or Tether itself. It has been officially confirmed that the U.S. government is using dollar-pegged stablecoins as a tool for financial sanctions enforcement.

Just as the SWIFT-based dollar payment network has become the core infrastructure for U.S. sanctions, the cooperation system between Tether and OFAC extends on-chain dollar control into the blockchain realm. This means that countries seeking to de-dollarize, if they attempt to use stablecoins as an alternative route, will find that route also blocked.

In the Korean context, this event also offers important insights. The currently discussed policies on the Korean won stablecoin, and the dollar-pegged stablecoin model targeting offshore Korean won NDF markets, carry sanctions risks and political exposure entirely dependent on the nationality and jurisdiction of the issuer. The moment a stablecoin uses the dollar, it becomes a tool operating within the U.S. financial order.

Stablecoins are not decentralized currencies. At least, USDT is not.