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U.S. Forces Board Iranian Vessel as Tensions Near Strait of Hormuz Escalate

U.S. forces interdict an Iranian tanker as Tehran claims it maintains control over the strategic waterway.

May 21, 2026 at 4:00 AM

Tensions between the United States and Iran intensified over the last 24 hours following a direct maritime encounter in the Gulf of Oman. U.S. Central Command (CENTCOM) reported that American Marines boarded an Iranian-flagged commercial tanker suspected of violating the ongoing U.S. blockade. After a search and a directed change in course, the vessel was released. This exercise of maritime enforcement comes as President Donald Trump, speaking at the U.S. Coast Guard Academy, signaled that military options remain on the table to "finish it up" unless a deal is reached. In response, Tehran has sought to project strength and administrative control over the Strait of Hormuz. The Islamic Revolutionary Guard Corps (IRGC) claimed to have managed the passage of 26 commercial vessels, including oil tankers, to demonstrate its role as a manager of maritime traffic. Concurrently, Iranian military officials warned that the U.S. has failed to reopen the strait and claimed that Tehran possesses advanced weaponry that has not yet been deployed in the conflict. Despite the military posturing, diplomatic channels remain active. Pakistan’s Interior Minister Mohsin Naqvi has engaged in mediation talks in Iran, while Chinese President Xi Jinping has communicated the urgency of a ceasefire to Russian President Vladimir Putin. Global energy markets reacted to the volatility, with oil prices dipping slightly following President Trump’s assertion that the conflict could conclude "very quickly," reflecting high sensitivity to both military actions and administration rhetoric.

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