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While Tehran has not issued a formal, nationwide blockade decree—likely to avoid self-inflicted economic damage—the IRGC’s actions have already disrupted maritime traffic. Tanker tracking data from firms like Kpler and Bloomberg show vessels making U-turns, slowing, stopping, or rerouting around the strait. Major oil companies, trading houses, and LNG shippers—including some of the world’s largest—have suspended shipments through the passage. Some owners instructed fleets to avoid Hormuz entirely, while others advised proceeding with extreme caution. The U.S. Navy issued advisories that it could not guarantee commercial vessel safety in the Persian Gulf, prompting widespread hesitation.
