U.S. Sends Destroyers to Clear Mines in Strait of Hormuz and Will Publish Safe Shipping Corridor

Two U.S. Navy destroyers have moved into the Persian Gulf as part of a new mission to clear sea mines from the Strait of Hormuz, and the United States says it will soon publish a mapped “safe pathway” for commercial shipping through one of the world’s most important oil chokepoints.

U.S. Central Command, which oversees American forces in the Middle East, said on April 11 that its units have begun “setting conditions for clearing mines” in the narrow waterway and that the operation is intended to reopen traffic that has been choked since war erupted between the United States, Israel and Iran in late February.

The Strait of Hormuz normally carries about one‑fifth of global seaborne crude oil. Any disruption there can quickly affect world energy prices, shipping routes and insurance costs. The mine‑clearance push is also the first publicly acknowledged transit of U.S. warships through the strait since the current conflict began, turning it into an early test of who can actually guarantee passage while a fragile cease‑fire is in place.

In its statement, Central Command said the guided‑missile destroyers USS Frank E. Petersen Jr. and USS Michael Murphy “transited the Strait of Hormuz and operated in the Arabian Gulf” as part of the mission. The command added that more U.S. forces, “including underwater drones,” would join the effort in the coming days.

“Today, we began the process of establishing a new passage and we will share this safe pathway with the maritime industry soon to encourage the free flow of commerce,” Adm. Brad Cooper, the Central Command chief, said in the release.

By promising to publicly share a defined corridor judged clear of mines, the United States is signaling to shipowners, energy traders and insurers that it intends not only to protect its own vessels but to restore routine commercial traffic through an international strait that has effectively been a war zone for weeks.

Iran, however, is openly contesting both the operation and Washington’s description of what happened.

The navy of Iran’s Islamic Revolutionary Guard Corps and other Iranian authorities have “strongly denied” that American warships entered the Strait of Hormuz as claimed by the United States and have warned that U.S. naval movements there are unauthorized and dangerous. Iranian state‑linked media circulated messages portraying U.S. ships as having been deterred or held at bay.

“Any erroneous maneuver will trap the enemy in deadly whirlpools in the strait,” the Revolutionary Guard navy said in a warning cited by China’s state‑run Xinhua news agency, underscoring Tehran’s effort to deter further U.S. steps.

Some Iranian outlets went further, reporting that a U.S. military vessel heading from the Emirati port of Fujairah toward the strait turned back after a “30‑minute ultimatum” from Iranian forces. That account conflicts directly with the U.S. military’s detailed description of a successful transit by two destroyers into the Gulf. There is no independent public evidence so far — such as neutral satellite tracking or third‑party imagery — that clearly confirms either side’s version of the encounter, and the ultimatum‑and‑retreat story remains an unverified claim by Iran.

The competing narratives highlight the broader contest over control of the waterway at a moment of unusual diplomatic sensitivity.

On Feb. 28, U.S. and Israeli forces launched a large campaign of strikes on Iranian territory and assets, widely seen as the start of the current phase of the conflict. In the weeks that followed, mine‑laying, missile fire and attacks on shipping effectively shut down normal commercial traffic through Hormuz, and U.S. forces said they targeted Iranian mine‑laying vessels in March to reduce the threat.

A Pakistan‑brokered, two‑week cease‑fire between Washington and Tehran took effect April 8, with talks in Islamabad aimed at turning the pause in hostilities into a broader agreement. The U.S. mine‑clearance mission is beginning during that temporary truce, not after a settlement — a fact likely to feature in negotiations if Iran concludes the operation violates the spirit of the cease‑fire.

At the same time, the United States has signaled it will escalate economic pressure. Within about two days of the mine‑clearance announcement, Washington said it would begin enforcing a naval blockade on ships entering or leaving Iranian ports, while insisting it does not intend to impede traffic bound for other Gulf states. Declaring and enforcing a blockade is a major step under the law of armed conflict and adds another layer of tension around Hormuz.

Markets have already reacted. Oil prices jumped roughly 7% to 8% after the blockade and mine‑clearance moves were publicized, with benchmark Brent crude briefly trading above $100 a barrel. Marine insurers continue to classify the Strait of Hormuz and nearby waters as a war‑risk zone, pushing up premiums for tankers and other vessels and forcing shipowners to weigh delays or costly rerouting against potential exposure to mines and missiles.

For those companies, the credibility and clarity of any U.S.‑designated corridor will be crucial. A publicly shared route that major navies are actively surveying and protecting could help lower perceived risk and, eventually, costs. But if Iran contests that corridor or if a commercial vessel hits a mine despite U.S. assurances, the effect could be the opposite.

Central Command has not said how many mines might be present or how long it will take to declare a passage safe. Mine‑countermeasures are typically slow, methodical work, and the initial deployment of two destroyers and underwater drones suggests an early, conditions‑setting phase rather than imminent full reopening.

What happens next hinges on two parallel tracks: the arrival of additional U.S. mine‑clearing assets and the course of U.S.–Iran talks in Islamabad. If Iran tolerates further U.S. naval activity in the strait, the operation could ease one of the most acute chokepoints in global trade. If it chooses to challenge the mission — whether at sea, through threats, or by walking away from the cease‑fire — the attempt to make Hormuz safer could instead become the flashpoint that pulls the region back into open conflict.