U.S. naval forces have reduced Iran’s crude output from roughly 1.8 million barrels per day in March to a trickle, underscoring the strategic pressure on Tehran’s energy revenue. The blockade, imposed on April 13, aims to force a peace deal by choking the country’s lucrative oil trade. The move follows Iran’s closure of the Strait of Hormuz and the start of a two-month war that has rattled global markets. Washington insists the embargo will lift only when a final agreement is signed, while Tehran refuses to negotiate without lifting the blockade. Data released by maritime trackers show that 34 Iran-linked tankers bypassed the U.S. blockade, moving about 10.7 million barrels of oil through the Strait of Hormuz between April 13 and 21. Lloyd’s List Intelligence reported that at least 26 shadow-fleet vessels also slipped past the naval cordon. The U.S. Navy has seized two vessels and directed 31 others to turn back, but the blockade’s economic toll is estimated at $500 million per day. Prior to the conflict, Iran earned roughly $45 billion annually from oil exports, about 10% of its GDP. Energy analyst Nader Itayim noted that the blockade has succeeded in stopping vessel traffic, but warned that Washington may be disappointed if it expects swift concessions. Defense Priorities director Rosemary Kelanic said the shadow fleet traffic remains steady, though the daily volume is lower than the six or seven ships that transited before the blockade. German Institute fellow Hamidreza Azizi cautioned that economic pressure alone will not force Iran to concede, and that Tehran might even restart the war if the blockade continues to fail. Looking ahead, the blockade will likely persist as Washington seeks a diplomatic resolution, but shadow fleets and overland routes will continue to dilute its effectiveness. The ongoing pressure could keep global oil markets in flux, while the U.S. and its allies monitor Iran’s next moves for signs of a breakthrough or escalation.