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Iran Mines Strait of Hormuz Again, U.S. Navy Expands Mine-Clearing Operations

WorldBusiness4/23/2026
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Iran's Islamic Revolutionary Guard Corps (IRGC) navy has laid more mines in the Strait of Hormuz, a critical oil shipping lane, for the second time since the war began. The U.S. Navy is expanding mine-clearing operations with underwater drones and has redirected 33 vessels since the blockade started. President Trump has ordered the Navy to 'shoot and kill' any Iranian boats laying mines.

Facts First

  • Iran has laid more mines in the Strait of Hormuz, a key global oil shipping lane, for the second time since the war began.
  • The U.S. Navy is expanding mine-clearing operations with underwater drones and has redirected 33 vessels since the blockade started.
  • President Trump ordered the Navy to 'shoot and kill' any Iranian boats laying mines and said mine-clearing efforts would be tripled.
  • Daily ship traffic in the strait has plummeted from over 100 ships daily to single digits.
  • A third U.S. aircraft carrier, the USS George H.W. Bush, has arrived in the region.

What Happened

Iran's Islamic Revolutionary Guard Corps (IRGC) navy laid more mines in the Strait of Hormuz this week, according to a U.S. official and a source with knowledge of the issue. This is the second time Iran has mined the strait since the war began. The U.S. military detected and has been tracking the Iranian mine-laying operation. A U.S. official stated they know the number of new mines deployed but did not provide the count. Prior to this, experts estimated fewer than 100 mines had been deployed by Iran.

In response, President Trump posted on Truth Social ordering the U.S. Navy to 'shoot and kill' any Iranian boats laying mines with 'no hesitation.' He stated he ordered the mine-clearing operation 'to continue, but at a tripled up level!' U.S. officials stated the Navy is operating underwater drones in the Strait of Hormuz for mine-clearing operations. The aircraft carrier USS George H.W. Bush and its strike group arrived in the U.S. Central Command (CENTCOM) area of responsibility on Thursday, becoming the third U.S. carrier in the region. CENTCOM stated it has redirected 33 vessels since the blockade began.

Why this Matters to You

Approximately 20% of the world's seaborne oil passes through the Strait of Hormuz during peacetime. The International Energy Agency (IEA) has called the current situation the largest oil supply disruption in the history of the global market, noting it is larger than the 1970s oil shocks. Daily ship traffic in the strait has decreased from more than 100 ships daily to single digits on most days. This severe disruption could lead to higher global oil prices, which may affect fuel costs for your transportation and heating.

What's Next

The mine-clearing effort may involve special mine-hunting helicopters and surveillance aircraft. President Trump's announcement indicated that two mine countermeasure vessels, the USS Chief and the USS Pioneer, may be operating in the Strait. U.S. officials believe the Iranian armed forces still have mines in stashes along the coast and can lay them using small fishing-boat-sized Gashti vessels, which can carry two to four mines each. Iran maintains scores of Gashti vessels that can be equipped with rocket launchers and mounted machine guns to interdict large tankers. The U.S. Navy's expanded presence and mine-clearing operations could help secure the shipping lane, but the situation remains volatile.

Perspectives

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Energy Analysts characterize the current crisis as "the largest oil supply disruption in the history of the global market," noting that it surpasses the severity of the 1970s oil shocks.
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Military Observers view the situation as an escalating military standoff where the deployment of a third U.S. aircraft carrier is "tightening the naval blockade on Iran" and expanding presidential military options.
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Geopolitical Experts warn that the Strait of Hormuz remains a "narrow and perilous waterway" due to the persistent threat of Iranian attacks.