U.S. Treasury Secretary Scott Bessent posted on X on April 29, publicly listing six attack vectors in the Washington-led sanctions campaign against Iran. For the first time, "cryptocurrency access channels" appeared alongside international shadow banking, weapons procurement, shadow fleets, and other traditional targets. Bessent claimed the actions have disrupted "hundreds of billions of dollars" in Iranian revenue that could have funded terrorism. Tehran's inflation has doubled, the rial is rapidly depreciating, and if Iran cuts output further, daily losses are estimated at $170 million.
On the same day, OFAC issued an interpretive note explicitly prohibiting U.S. persons, financial institutions, and foreign entities owned or controlled by U.S. entities from paying Hormuz Strait security transit fees to the Iranian government or the IRGC. The note added that even non-U.S. entities making such payments face "significant sanctions risk." OFAC also designated 17 individuals and 18 entities linked to Iranian oil trade intermediaries and financial agents.
Hormuz Strait Chokehold: Shipping Down 95%
UN Secretary-General spokesperson Stéphane Dujarric cited UNCTAD tracking data on April 29: vessel transits through the Strait of Hormuz have plunged 95.3% since February 28. Side effects are already visible — global food prices rose 6% and European crude oil prices surged 53% over the same period.
USDT's Iran Gray Corridor Is Being Crushed
For the crypto market, the most significant signal in Bessent's statement is the classification of "crypto access channels." Iran has heavily used stablecoins like USDT to bypass dollar-based settlement. Reports from Chainalysis and TRM Labs show Iranian exchanges like Nobitex have accumulated tens of billions of dollars in stablecoin inflows, some flowing to sanctioned entities and IRGC-linked wallets. Tether has accelerated wallet freezes over the past year, but over-the-counter (OTC) desks and decentralized exchange routes remain the hardest enforcement gap.
Washington's signal is now clear: the next pressure point is OTC dealers and the stablecoin circulation network in the Middle East. For compliant exchanges and USDT holders, sanctions extending on-chain mean KYC/AML standards will tighten further, significantly raising compliance costs for businesses handling Middle East deposits and withdrawals.
Political Costs Mount, but Blockade Architecture Advances
Opposition voices are emerging alongside the pressure. German Chancellor Friedrich Merz criticized the U.S. for having "no exit strategy in the Iran war." Trump shot back on Truth Social on April 29, saying "Merz apparently thinks Iran having nuclear weapons is fine." A Reuters/Ipsos poll released the same day showed Trump's overall approval rating falling from 36% to 34%, and approval on cost-of-living issues dropping from 25% to 22%. According to the Wall Street Journal, Trump has instructed aides to prepare for a long-term blockade of Iran — signaling a systemic strategic contraction, not a short-term squeeze.
Next Phase: Enforcement Moves from Addresses to Ecosystems
From a sanctions logic perspective, the Treasury listing "crypto access channels" as an official target marks a clear shift in OFAC enforcement from on-chain wallet addresses to the off-chain ecosystem. Past sanctions mainly targeted specific wallet addresses; this statement implies that the "channels" connecting Iranian funds to the stablecoin market — including OTC desks, P2P platforms, and intermediaries providing fiat on-ramps for Iranian users — are now in the crosshairs. Tether's faster freeze cooperation notwithstanding, decentralized protocols and cross-chain bridges remain gray zones. With physical blockade at the Strait of Hormuz and financial blockade on-chain advancing in sync, Washington has already answered the question: when a country's oil revenue is locked and its fiat channels cut, the alternative role crypto could play will be swiftly shut down.