US orders naval blockade
The U.S. ordered a naval blockade of the Strait of Hormuz this week, a major move affecting a key shipping lane for energy and goods. The briefing links that action to broader disruptions in energy and import costs that can ripple into hardware and logistics budgets for tech projects. (al-monitor.com)
President Donald Trump ordered the United States Navy to begin blockading the Strait of Hormuz after talks with Iran collapsed on Sunday. (al-monitor.com) United States Central Command said the blockade of maritime traffic entering and leaving Iranian ports would start at 10 a.m. Eastern time on Monday, April 13. Reuters reported the move would keep roughly 2 million barrels a day of Iranian oil off the market. (al-monitor.com) Trump tied the order to failed negotiations in Islamabad over Iran’s nuclear program and to a ceasefire announced on Wednesday, April 8, that was meant to pause the six-week war until April 22. Iran’s Revolutionary Guards said they still controlled traffic in the waterway and warned they could trap hostile forces there. (al-monitor.com) The Strait of Hormuz is the 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 petroleum products moved through it in 2025. (iea.org) The United States Energy Information Administration said flows through the strait averaged 20.9 million barrels a day in the first half of 2025, equal to about 20% of global petroleum liquids consumption and one-quarter of the world’s seaborne oil trade. (eia.gov) That makes a blockade bigger than an Iran story. Tankers carrying crude oil, refined fuels and liquefied natural gas use the route, so delays there can raise fuel, shipping and insurance costs far beyond the Gulf. (iea.org) Oil traders reacted immediately. Reuters reported on April 13 that Brent crude jumped more than 8% to above $100 a barrel ahead of the blockade, after the United States Energy Information Administration had already said last week that Brent averaged $103 a barrel in March and could peak at $115 in the second quarter. (thehindu.com) (eia.gov) A naval blockade is not a symbolic order. Reuters reported military analysts described it as an open-ended operation that would require warships, aircraft and rules for stopping or turning back commercial vessels without pulling other United States forces out of the region. (al-monitor.com) The immediate question is whether ships keep moving. CBS News reported Monday that Central Command said vessels that avoid Iranian ports would still be allowed to use the strait, a distinction aimed at preserving some traffic while cutting off Iran’s exports. (cbsnews.com) The next test is whether that limited passage holds. The strait is only 29 nautical miles wide at its narrowest point, and the International Energy Agency said its inbound and outbound shipping lanes are just 2 miles wide each. (iea.org)
