U.S. Naval Blockade Depletes Iran’s Offshore Oil Reserves

A U.S. naval blockade has effectively exhausted Iran’s offshore crude oil reserves, according to shipping intelligence firm Kpler. The stockpile, which held approximately 135 million barrels at the start of the conflict in February, was fully depleted by mid-October. This development marks the collapse of a long-standing shadow fleet network that previously allowed Tehran to bypass international sanctions by transferring oil in Southeast Asian waters for delivery to Chinese refineries.

U.S. Central Command estimates that the blockade has cost Iran at least $25 billion in lost revenue. This financial strain has contributed to a significant devaluation of the Iranian rial, which has lost roughly one-third of its value since July, leading to increased inflation and economic instability. As Iranian shipments decline, Chinese refiners have begun sourcing oil from alternative suppliers in Brazil and West Africa.

While Iranian officials maintain that the regime can withstand the economic pressure, Washington intends to use these financial constraints to push for concessions regarding Iran's nuclear program. The loss of these reserves limits the government's ability to fund military infrastructure and regional security operations.