US Treasury Secretary Scott Bessent has announced that roughly $1 billion in Iranian crypto holdings have been seized, marking one of the most aggressive digital asset enforcement actions in American history.

Live: Secretary Bessent delivers remarks at the Reagan National Economic Forum. https://t.co/k0OZERqJ1T

— Treasury Department (@USTreasury) May 29, 2026

The seizures fall under “Operation Economic Fury,” a campaign targeting the financial infrastructure propping up the Iranian regime and the Islamic Revolutionary Guard Corps.

How Operation Economic Fury unfolded

The campaign kicked off in late April 2025, and it moved fast. On April 25, the Treasury froze approximately $344 million in assets, primarily denominated in Tether’s USDT stablecoin.

Four days later, on April 29, Bessent updated the tally. An additional $100 million to $150 million had been seized, pushing the confirmed total to nearly $500 million.

The operation involved direct collaboration with Tether, the company behind the world’s largest stablecoin by market cap.

Alongside the asset freezes, the Treasury imposed sanctions on two UK-registered cryptocurrency exchanges: Zedcex and Zedxion. According to the Treasury, these platforms had facilitated approximately $1 billion in IRGC-linked funds since 2023.

Why Iran turned to crypto in the first place

Iran’s relationship with digital assets is, in many ways, a story about desperation. The Central Bank of Iran has been under US sanctions since 2019, which effectively locked the country out of large swaths of the global financial system.

The IRGC, which the US designated as a foreign terrorist organization in 2019, apparently leaned heavily into this channel. The Treasury’s allegation that Zedcex and Zedxion processed roughly $1 billion in IRGC-linked transactions over two years illustrates the scale of crypto’s role in Iranian financial operations.

What this means for investors

USDT is the backbone of crypto trading. It facilitates more daily volume than any other digital asset, and it serves as the primary on-ramp and off-ramp for traders across dozens of exchanges globally.

When the US government demonstrates that it can freeze hundreds of millions in USDT with a phone call to Tether’s compliance team, that changes the risk calculus for everyone holding the stablecoin.

Freezing $344 million in a single action is not business as usual. It’s a demonstration of how centralized control over a supposedly decentralized financial tool can be wielded at government speed.

The sanctions against Zedcex and Zedxion also carry a warning for smaller exchanges. Platforms that fail to implement robust know-your-customer and anti-money-laundering controls are now squarely in the crosshairs. The Treasury isn’t just pursuing the end users of illicit funds. It’s going after the infrastructure that enables them.