U.S. orders Hormuz blockade
The U.S. has ordered a naval blockade of the Strait of Hormuz and said Central Command will begin enforcing a blockade of Iranian ports, a sharp escalation in the Gulf. The administration said the Navy will stop ships entering or leaving the strait and CENTCOM will begin interdiction, a move described by one report as a “significant escalation.” This shifts the U.S. posture from deterrence toward operational interdiction and puts immediate pressure on shippers, insurers and oil buyers to price in disruption. (apnews.com (insidenova.com)
President Donald Trump said on Sunday, April 12, that the United States Navy would begin blocking ships tied to Iranian ports in and around the Strait of Hormuz. (apnews.com) The order came after more than 20 hours of talks in Islamabad ended without a ceasefire deal between Washington and Tehran. United States Central Command then said the blockade would start at 10 a.m. Eastern on Monday, April 13. (apnews.com) (centcom.mil) Central Command’s written order was narrower than Trump’s first post. It said United States forces would stop ships entering or leaving Iranian ports and coastal areas, but would not block vessels transiting the strait to non-Iranian ports. (centcom.mil) (bbc.com) The Strait of Hormuz is the narrow sea lane between Iran and Oman that links the Persian Gulf to the open ocean. The International Energy Agency says about 20 million barrels a day of oil and oil products moved through it in 2025. (iea.org) The United States Energy Information Administration says flows through Hormuz in 2024 and early 2025 equaled more than one-quarter of global seaborne oil trade and about one-fifth of world petroleum consumption. Qatar also sends about one-fifth of global liquefied natural gas trade through the same route. (eia.gov) That is why even a partial blockade hits beyond Iran. Tanker owners, cargo insurers and oil buyers have to price the risk that ships could be delayed, searched, rerouted or kept out of Iranian terminals altogether. (centcom.mil) (lloydslist.com) The move also marks a change in the American role. Until now, the United States had been escorting traffic and trying to reopen the waterway; on April 11, two Navy destroyers sailed through the strait to help establish a route for merchant ships. (news.usni.org) Iran has argued for new controls in the strait, including tolls, during the current war, and shipping traffic had already fallen sharply even after a ceasefire announcement. Reuters reported on April 11 that only three fully loaded supertankers exited the Gulf that day. (reuters.com) (cbsnews.com) Trump framed the blockade as a response to Iran’s refusal to abandon its nuclear program. Tehran has not accepted that demand, and the failed Islamabad talks left the military side of the crisis in the hands of the Navy and Central Command. (apnews.com) (cbsnews.com) The next test is practical, not rhetorical: whether commercial ships keep sailing under the new rules on April 13, and whether the narrower Central Command order holds. (centcom.mil) (apnews.com)
