Strait of Hormuz Blockade Talk
U.S. officials said the U.S. Navy will begin preventing ships from entering or leaving Iran’s ports after talks with Iran collapsed, a move described as a major escalation. Reports note Washington says it will not stop vessels travelling to and from other countries’ ports, but the announcement still marks a sharp change in posture in the Gulf. (apnews.com) (bbc.com)
President Donald Trump said on April 12 that the United States Navy would start blocking ships tied to Iranian ports after United States-Iran talks in Islamabad ended without a deal. (apnews.com) United States Central Command then said the blockade would begin on Monday, April 13, at 10 a.m. Eastern time, or 5:30 p.m. in Iran. It said ships traveling between non-Iranian ports would still be allowed to pass through the Strait of Hormuz. (apnews.com) Vice President J.D. Vance, who led the American side in Pakistan, said the negotiations ran more than 21 hours and ended without agreement. He said Iran had rejected American terms, while both sides still left open the possibility of more talks. (npr.org) The Strait of Hormuz is the only sea passage from the Persian Gulf to the open ocean. The International Energy Agency says about 20 million barrels a day of crude oil and oil products moved through it in 2025, equal to about one-fifth of global oil consumption. (iea.org) That geography is why a blockade aimed only at Iran still reaches far beyond Iran. The shipping lanes are narrow, and the route sits between Iran on one side and Oman on the other. (britannica.com) The move also changes Washington’s posture in the waterway. Before Sunday’s announcement, the White House had framed its goal as reopening commercial transit after weeks of disruption, not using the Navy to stop traffic to a specific country’s ports. (pbs.org) Iran had already been using access to the strait as leverage. United States Naval Institute News reported on March 27 that merchant traffic was still moving only in a trickle after Iran’s Revolutionary Guards set up a tolled passage system for some ships. (news.usni.org) AP reported that Central Command said the new blockade would be enforced “impartially against vessels of all nations” if they were entering or leaving Iranian ports. That means the test for interception is the port call, not the ship’s flag. (apnews.com) Trump also said the United States would interdict vessels in international waters that had paid tolls to Iran and would begin clearing mines that he said Iran had placed in the strait. Reuters reported those added steps alongside the blockade announcement. (reuters.com) The next marker is Monday’s start time. If the order is carried out as announced, the United States will be using naval force not just to escort traffic through Hormuz, but to keep ships from reaching Iran’s own ports. (bloomberg.com)
