Iran Threatens to Block Strait of Hormuz in Response to U.S. Military Warnings

TEHRAN — Iran's top military command issued a stark ultimatum on Wednesday, vowing to completely block oil transit through the strategic Strait of Hormuz should the United States launch attacks against Iranian infrastructure.

The declaration came from Khatam al-Anbiya Central Headquarters, the engineering and construction arm of the Islamic Revolutionary Guard Corps (IRGC), which oversees critical military projects. The command stated that any U.S. strike targeting bridges or power plants within Iran would trigger an immediate closure of the waterway, a chokepoint through which roughly one-fifth of global oil consumption flows.

The threat marks a significant escalation in regional tensions following recent warnings from Washington regarding potential interference with maritime movement and alleged preparations to target key Iranian assets. U.S. officials have indicated that American forces are prepared to respond decisively if Iran disrupts commercial shipping or threatens international navigation rights in the Gulf region.

Iranian military leaders framed their warning as a necessary defensive measure against what they described as aggressive posturing by Washington. The command emphasized that blocking the strait would not be an act of aggression but a proportional response to direct attacks on Iranian sovereignty and infrastructure. Officials noted that such a move would sever critical energy supplies for global markets, forcing immediate economic repercussions worldwide.

The Strait of Hormuz remains one of the world's most vital maritime corridors, connecting the Persian Gulf with the Arabian Sea. Any disruption in this narrow passage could cause oil prices to spike sharply and destabilize economies dependent on Middle Eastern exports. Major shipping lines have already begun reviewing contingency plans as diplomatic channels struggle to de-escalate the rhetoric between Tehran and Washington.

While Iran has historically used threats of closing the strait during periods of high tension, it has not fully blocked commercial traffic in recent decades. However, military analysts note that current capabilities allow for rapid deployment of asymmetric naval tactics, including mines and fast-attack craft, which could effectively halt transit within hours if ordered.

The United States has yet to issue a formal response to the specific ultimatum issued by Khatam al-Anbiya on Wednesday. Pentagon officials have previously stated they would not be deterred from protecting freedom of navigation but stopped short of detailing immediate military countermeasures in light of the new threat.

As diplomatic efforts continue behind closed doors, uncertainty grows regarding whether the standoff will lead to direct conflict or a negotiated de-escalation. The international community watches closely as both nations navigate a volatile situation where miscalculation could trigger broader regional warfare and global energy crises. Questions remain about how long Iran is willing to maintain this threat posture without crossing into actual kinetic action, and whether Washington's strategic options have narrowed in the face of such high-stakes warnings.