Iran attacked three merchant ships in the Strait of Hormuz on Wednesday, March 11, 2026, while warning that continued US-Israeli military strikes could push global oil prices to $200 per barrel. The maritime assaults followed Tuesday's missile attacks on a US base in northern Iraq, US naval headquarters in Bahrain, and targets in central Israel, according to Pentagon statements.
The attacks intensified a crisis that has effectively closed the Strait of Hormuz, through which approximately one-fifth of global oil supplies normally transit. Brent crude currently trades at $91 per barrel, down from $120 on March 9, but 65 percent higher than pre-conflict levels.
Shipping disrupted in critical waterway
Iran's Islamic Revolutionary Guard Corps justified the maritime campaign by citing regional security threats from US actions, stating Tehran will not permit oil transit until US-Israeli attacks cease. The statement accompanied attacks on vessels near or within the strait, escalating earlier maritime strikes that began March 1, 2026.
The International Energy Agency announced a coordinated release of 400 million barrels from strategic reserves by 32 member countries, the largest such deployment on record. However, energy analysts note this volume replaces only approximately three weeks of normal Strait of Hormuz flow and will take months to fully deploy.
Marine traffic through the waterway has slowed to a trickle, with major shipping firms suspending operations and insurance premiums skyrocketing. Alternative routes through pipelines such as the Saudi Petroline and Abu Dhabi Crude Oil Pipeline offer limited capacity compared to seaborne transit volumes.
Members are reading: How the three-week strategic reserve timeline collides with Iran's escalation calculus and the risk of $200 oil.
Domestic security posture hardens
Iranian domestic security forces remain on high alert, with Police Chief Ahmadreza Radan declaring protesters would be treated "as an enemy." Tehran also threatened to attack banks conducting business with the United States or Israel, expanding pressure beyond maritime and military domains.
The Strait of Hormuz crisis marks the most severe test of global energy security infrastructure in five decades. With diplomatic efforts to restart previous negotiations stalled and military responses carrying escalation risks, both Washington and Tehran face narrowing options as economic consequences accelerate.
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