U.S. blockade near Iran
The U.S. said it would begin a blockade of all Iranian ports and warned that Iranian vessels approaching the blockade could be destroyed. (apnews.com) Markets and traders are already pricing higher oil — one report put a path to $115 a barrel as tensions around the Strait of Hormuz intensified — and experts warned the shock could spill into broader supply chains. (businesstoday.in, businessinsider.com) Companies that rely on bulky inputs like packaging report they are diversifying suppliers and building buffers rather than fully reshoring production. (supplychaindive.com)
The United States began blocking ships entering and leaving Iranian ports on April 13, opening a new front in the fight over the Strait of Hormuz. (apnews.com) U.S. Central Command said the blockade took effect at 10 a.m. Eastern time on Sunday and would apply to vessels of all nations using Iranian ports on the Arabian Gulf and Gulf of Oman. The command said ships bound for non-Iranian ports would still be allowed to transit the strait. (centcom.mil) President Donald Trump said Iranian vessels approaching the blockade could be destroyed, while Tehran called the move illegal and warned that other Gulf ports would not be safe if Iran’s traffic was cut off. Early shipping data on April 14 showed little traffic entering or leaving Iranian ports as the first full day of enforcement began. (apnews.com, cnn.com) The waterway at the center of the fight is a narrow sea lane between Iran and Oman that connects the Persian Gulf to the open ocean. The International Energy Agency said about 20 million barrels a day of crude oil and oil products moved through it in 2025, roughly one-quarter of the world’s seaborne oil trade. (iea.org) At its narrowest point, the Strait of Hormuz is 29 nautical miles wide, with inbound and outbound shipping channels about 2 miles wide each. The U.S. Energy Information Administration said few practical alternatives exist if traffic is disrupted, even though Saudi Arabia and the United Arab Emirates have some pipeline capacity outside the strait. (iea.org, eia.gov) Oil traders moved first. After the blockade announcement, U.S. crude rose to $104.24 a barrel and Brent crude rose to $102.29, while another market report said some traders were sketching a path to $115 if the standoff deepened. (cbsnews.com, businesstoday.in) By early April 14, prices had eased on signs Washington and Tehran could restart talks, with Reuters reporting Brent at $98.74 a barrel around 8:28 Greenwich Mean Time. That pullback still left crude far above the levels seen before the latest escalation. (finance.yahoo.com, nbcnews.com) The risk is not limited to gasoline. The Energy Information Administration said the strait handled about one-fifth of global oil and petroleum consumption in 2024 and the first quarter of 2025, and the International Energy Agency said Qatar and the United Arab Emirates together account for about 19% of global liquefied natural gas exports through the route. (eia.gov, iea.org) That is why economists are talking about a supply shock instead of just an oil spike. Robert Pape of the University of Chicago said reduced traffic through Hormuz is likely to raise prices for fertilizer, helium and other goods that move through the same regional shipping system. (finance.yahoo.com, africa.businessinsider.com) Manufacturers that depend on bulky, low-margin inputs are already adjusting. Supply Chain Dive reported on April 13 that packaging buyers are diversifying suppliers and building inventory buffers because moving all sourcing to the United States is “nearly impossible” for many consumer brands. (supplychaindive.com) The next test is whether the blockade stays limited to Iranian ports or triggers wider retaliation around the Gulf. If tankers keep moving to Saudi, Emirati and other non-Iranian terminals, the shock may stay expensive; if traffic across the strait seizes up, the numbers now flashing in oil markets will start showing up in freight bills and factory orders. (centcom.mil, iea.org)
