U.S. Begins Mine Clearance in Strait of Hormuz as Trump Declares Iran "Badly Defeated"

The U.S. military launched mine clearance operations in the Strait of Hormuz, one of the world's most critical energy chokepoints, while President Trump declared that Iran had been "very badly defeated."

The Operation

U.S. Central Command (CENTCOM) announced on April 11 that two Arleigh Burke-class guided missile destroyers, USS Frank E. Petersen Jr. (DDG 121) and USS Michael Murphy (DDG 112), transited the Strait of Hormuz and entered the Persian Gulf. Admiral Brad Cooper said forces had begun "establishing a safe transit corridor." Unmanned underwater vehicles (Knifefish UUV) will assist in locating and neutralizing mines.

Trump posted on Truth Social: "We are now beginning the process of clearing the Strait of Hormuz, as a favor to China, Japan, South Korea, France, Germany, and other nations." He claimed all 28 of Iran's mine-laying vessels had been sunk.

Why Hormuz Matters

The Strait of Hormuz is a narrow waterway, just 24 miles wide at its narrowest, connecting the Persian Gulf to the Gulf of Oman and the open ocean. It carries roughly 20-25% of all seaborne oil (about 20 million barrels per day), 20% of global LNG trade, and 30% of international fertilizer shipments.

Think of it as a bottleneck for the world economy. If this strait is blocked, oil prices spike globally, shipping routes are disrupted, and every country that imports energy from the Gulf feels the impact immediately.

What Iran Did

On March 2, 2026, days after the U.S.-Israeli strikes began, Iran declared the strait "closed" and deployed naval mines. The results were severe: 21 commercial vessels were attacked, tanker traffic dropped 90%, and Brent crude surged above $97 per barrel. The International Energy Agency authorized the largest-ever emergency reserve release, 400 million barrels.

The Mine Problem

Iran deployed an estimated 2,000 to 6,000 naval mines, but here is the complication: many were laid haphazardly. Some units used commercial GPS, others relied on manual estimates. Many mines were never properly logged, and ocean currents have since moved them. Iran itself may not know where all its mines are. The U.S. must survey roughly 200 square miles of seabed, a process that could take months.