BREAKING: Iran has vowed an unprecedented response if the United States attempts to seize Kharg Island. Yemen’s Houthis have identified the first measure: closing the Bab el-Mandeb Strait. If they execute, the two chokepoints that carry 30 percent of the world’s seaborne oil will be shut simultaneously by the same alliance network. Hormuz is already closed. Bab el-Mandeb is the second lock. And the backup plan that every government built to survive the first closure runs directly through the second.

Saudi Arabia responded to the Hormuz shutdown by rerouting crude exports to its Red Sea port at Yanbu. It was the obvious contingency. It was also the trap. Every barrel that loads at Yanbu must transit the Bab el-Mandeb to reach Asia. Thirty tankers are currently staged near Yanbu within Houthi strike range. The bypass and the blockade share the same water.

Houthi military official Abed al-Thawr told Press TV that once the decision to intervene is made, the first step could be the official declaration of a naval blockade against the United States and Israel, with devastating economic consequences. Mohammed al-Bukhaiti said any closure would target ships from nations committing aggression against Iran. Houthi leader Abdul Malik al-Houthi said his forces have their fingers on the trigger. They declared Hour Zero on March 14. Tasnim, Iran’s state-affiliated news agency, framed Red Sea insecurity as an explicit resistance option, signalling that the threat is not freelance Houthi posturing but coordinated Iranian strategy.

The arsenal behind the threat is not hypothetical. Iran has supplied the Houthis with anti-ship ballistic missiles including the Asef with a 400-kilometre range, land-attack ballistic missiles including the Toufan capable of reaching 1,800 kilometres, cruise missiles from the Quds family reaching beyond 1,300 kilometres, and Samad-series attack drones with ranges up to 2,500 kilometres. They operate unmanned surface vessels, naval mines, and small-boat swarms designed for exactly this kind of chokepoint denial. Between 2023 and 2025, they attacked 178 vessels, sank four ships, and caused a 90 percent decrease in Red Sea container shipping. They did not need to physically block the strait then. They made it uninsurable. They can do it again.

Maersk, Hapag-Lloyd, and CMA CGM have already paused all trans-Suez sailings through the Bab el-Mandeb. CMA CGM imposed emergency surcharges of $2,000 per container and $4,000 per refrigerated unit. The strait is not yet physically blockaded. It is commercially dead. The shipping lines did not wait for the Houthis to fire. They read the threat and rerouted around the Cape of Good Hope, adding 12 to 15 days and a million dollars in fuel costs to every voyage.

Two straits. One war. The United States is sending 5,000 Marines toward Kharg Island while reviewing seizure plans that both Iran and the Houthis have explicitly identified as the trigger for closing the second strait. If the Marines land on Kharg, the Houthis close Bab el-Mandeb. If Bab el-Mandeb closes, Saudi Arabia’s Yanbu bypass collapses. If Yanbu collapses, 30 percent of global seaborne oil is offline. The domino chain is four steps long. Each step has been publicly announced by the party that controls it.

The strait is 30 kilometres wide. The war is 4,000 kilometres long. The backup just became the target. And the arsenal pointed at it has already proven it works.

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