10 June 2026

Trump’s Blockade Is Zeroing Out Iran’s Oil Exports

Foundation for Defense of Democracies  |  Saeed Ghasseminejad, Behnam Ben Taleblu

The Islamic Republic of Iran suffered a devastating blow in May, with American sanctions and a naval blockade leading to zero crude oil exports and only 2 million barrels of naphtha, or 64,000 barrels per day (bpd), per _Tanker Trackers_. This marks the lowest export volume in over a decade, effectively severing Iran’s primary financial artery.

Washington imposed the naval blockade on April 13, following a ceasefire with Iran and Tehran's closure of the Strait of Hormuz. May volumes collapsed to 3 percent of the February baseline of 2.1 million bpd, with estimated export revenues below $200 million. Only four small-capacity Panamax- and Handymax-class tankers, flying flags of Cameroon, Gambia, and Panama, bypassed enforcement to transport naphtha exclusively to China. This drastic reduction in illicit energy export revenues, which fund Iran's military and transnational terror apparatus, compounds fiscal mismanagement and isolation. Domestic economic indicators show intense systemic pressure, with May monthly inflation at 8.8 percent and the annual average at 57.7 percent. The blockade provides significant U.S. leverage over Iran's nuclear file, ballistic missile program, and support for terrorism, and should not be traded away prematurely.

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