80 Mines in Hormuz Block Traffic Normalization Despite U.S.-Iran Deal

Roughly 80 mines placed in the main shipping channel of the Strait of Hormuz are preventing an immediate return to normal maritime traffic, the International Association of Independent Tanker Owners reported on June 19, 2026, even as the agreement signed June 18 between the United States and Iran establishes toll-free passage for 60 days.

The effective closure of Hormuz began on February 28, 2026, when drones, missiles, and attack vessels blocked passage for commercial ships, as documented by the Brookings Institution in a June 8 analysis authored by Samantha Gross and Ryan Beane. The strait accounts for roughly 20% of global oil supply: approximately 15 million barrels per day (mb/d) of crude and 5 mb/d of refined products transited it before the conflict. The International Energy Agency (IEA) described the disruption as the largest supply shock in the history of the global oil market, as captured in that analysis. For Mexico, the impact is direct: the country imports liquefied natural gas (LNG) on Persian Gulf spot markets whose transport depends on Hormuz transit, and the price of the Mexican Mix export blend tracks international crude benchmarks.

According to the IEA's June 2026 Oil Market Report, flows through the strait fell to 9.6 mb/d in May, the lowest since the start of the conflict. In June, ship-to-ship transfers conducted in the Gulf of Oman lifted flows to around 12 mb/d, still below pre-crisis levels. Brent crude is trading at around $81 per barrel (USD/bbl), roughly $37 below its April peak but $20 above the start-of-2026 level. Independent tanker operators warned The Guardian that the strait will remain closed to normal commercial traffic for an indeterminate period until the mines are cleared from the main shipping channels.

The 60-day agreement establishes a political framework for free transit, but it does not remove the physical obstacle. The IEA projects a gradual recovery of Gulf exports as mine-clearing operations progress. The pace of mine removal from the main channel is the metric to watch.

This article was produced with artificial intelligence assistance from verified sources and reviewed by a human editor before publication.