Iran is escalating the war by placing explosive mines along a key oil route. Here are the risks.

Iran Escalates Conflict by Deploying Mines in Vital Oil Passage

Despite being outmatched in firepower and resources by the United States and Israel, Iran retains a critical strategic edge through its control of the Strait of Hormuz. This narrow waterway serves as a lifeline for global energy trade, facilitating the movement of one-fifth of the world’s oil supply. Recent reports suggest Tehran has intensified its efforts by deploying mines in the region, further complicating maritime traffic and signaling a new phase in the conflict.

Unconfirmed Mine Activity Sparks Debate

According to two intelligence sources, Iran has begun placing a small number of mines in the strait, though the scale remains limited. A U.S. official noted that Iran still maintains over 80% to 90% of its minelayers and small vessels, challenging President Donald Trump’s assertion that the country “has no navy.” This maneuver underscores Iran’s reliance on asymmetric warfare, a tactic designed to disrupt enemy operations despite overwhelming military pressure.

“There remains no confirmed evidence of mine deployment or detonation,” stated the United Kingdom Maritime Trade Operations (UKMTO), a British naval intelligence agency. The group, which supports maritime security, urged caution in interpreting the situation.

The U.S. military has estimated that Iran possesses around 5,000 to 6,000 naval mines, including limpet mines attached by divers, moored mines that float just beneath the surface, and bottom mines resting on the seabed. These weapons, combined with Iran’s Islamic Revolutionary Guard Corps (IRGC), create a multifaceted threat. The IRGC’s capabilities include not only mines but also suicide boats and shore-based missile systems, prompting one U.S. analyst to call the strait “Death Valley” due to its heightened danger.

Recent Attacks Highlight Escalation

On Tuesday, Iranian forces targeted two vessels, the Thai-owned Mayuree Naree and the Liberian-flagged Express Rome, both of which sustained damage while navigating the strait. The Mayuree Naree suffered an explosion in its engine room, leaving three crew members missing. The IRGC’s actions demonstrate how these asymmetric tactics can disrupt shipping, even as the U.S. and Israel continue aerial strikes.

Earlier that day, U.S. Central Command reported destroying 16 Iranian minelayers near the strait. While the operation targeted ships, it did not confirm the destruction of any mines, which may have already been positioned. Meanwhile, Trump tweeted on Truth Social, insisting: “If Iran has put out any mines in the Hormuz Strait, and we have no reports of them doing so, we want them removed, IMMEDIATELY!” He warned that failure to act could result in “consequences at a level never before seen,” but praised any removal as “a giant step in the right direction.”

Weakened U.S. Minesweeping Capabilities

U.S. naval forces in the Persian Gulf face challenges in countering Iran’s mine threat. The last of four dedicated minesweepers was decommissioned in September 2025, forcing the reliance on less specialized ships like littoral combat vessels (LCS). Critics have labeled these ships “Little Crappy Ships” due to their frequent technical issues and limited effectiveness in mine countermeasures.

With the strait effectively closed, the economic consequences are significant. Analysts estimate that nearly 15 million barrels per day of crude oil and 4.5 million barrels of refined products are trapped in the gulf, causing storage facilities to reach capacity. Even under normal conditions, the strait’s narrow channels and heavy traffic require precise navigation, but the addition of mines now amplifies the risk for vessels attempting to pass.