Iran's IRGC Closes Strait of Hormuz, Sending Oil Prices Surging

Iran's Islamic Revolutionary Guard Corps (IRGC) navy has closed the strategically vital Strait of Hormuz "until further notice," according to Iranian state media reports. The move, which immediately escalates geopolitical tensions in the Middle East, sent global oil prices surging on fears of a significant disruption to global energy supplies.

The Closure Announcement

The report, carried by Reuters citing Iranian state media, was released early on Sunday. The IRGC navy claimed the closure was enacted after it fired a warning shot at an unspecified vessel that had allegedly attempted to transit the waterway using an "unapproved route."

No further details were immediately available regarding the identity of the vessel or the potential duration of the closure. The action places a halt on all traffic through one of the world's most critical maritime chokepoints.

Immediate Market Reaction

The news triggered an immediate and sharp reaction in energy markets as traders priced in the risk of a prolonged supply shock. The closure directly threatens the flow of crude oil and liquefied natural gas (LNG) from major Persian Gulf producers.

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Key price movements included:

• Brent crude futures, the international benchmark, jumped by 3.29% to $78.51 per barrel.
• West Texas Intermediate (WTI) futures rose 3.35% to $73.80 per barrel.

A Critical Global Chokepoint

The Strait of Hormuz is the world's most important oil transit chokepoint. A significant volume of global seaborne oil, estimated to be around a fifth of global petroleum liquids consumption, passes through the narrow waterway daily.

Any disruption to transit in the strait has historically led to significant market volatility. The region has long been a flashpoint for tensions between Iran and Western powers, with previous incidents involving the seizure of commercial vessels and military posturing.