Decoded: What Happens If Iran Closes Bab el-Mandeb Too?

The Threat in One Sentence

Iran's top foreign policy adviser Ali Akbar Velayati warned on April 6 that 'the unified command of the Resistance front views Bab al-Mandeb as it does Hormuz.' Translation: the Houthis could blockade the Red Sea's southern gate on Iran's orders.

What Is Bab el-Mandeb?

Bab el-Mandeb — Arabic for 'Gate of Tears' — is a 20-mile-wide strait between Yemen and Djibouti at the southern mouth of the Red Sea. Every ship moving between Asia and Europe via the Suez Canal must pass through it. In 2024, approximately 4.1 million barrels of petroleum products and roughly 12% of all global trade transited this strait daily.

Iran does not border Bab el-Mandeb. But Yemen's Houthis do — and they have demonstrated they can disrupt it. In 2023-2024, Houthi attacks on Israel-linked vessels forced major container lines to reroute around the Cape of Good Hope. That disruption alone added 10-14 days to Asia-Europe voyages and spiked container rates by 300%.

The Dual-Chokepoint Nightmare

Here is why this threat is different from 2024. The Strait of Hormuz is already effectively closed to most commercial shipping following Iran's campaign against merchant vessels since late February 2026. If Bab el-Mandeb closes too, the math becomes devastating:

Hormuz alone: 20% of global oil and gas supply disrupted. Ships reroute around Africa, adding weeks and millions in costs per voyage.

Hormuz plus Bab el-Mandeb: 25% of global oil and gas blocked. The Suez Canal — which depends on Bab el-Mandeb being open — effectively shuts down for southbound energy traffic. Saudi Arabia's pipeline workaround to Red Sea ports becomes useless if Bab el-Mandeb is sealed.

The Arabian Peninsula would be encircled. Oil from the Gulf would have no viable maritime exit except through the Indian Ocean via routes that add 15-25 days to European delivery.

Follow the Insurance Money

Here is the part most analysis misses: the insurance market is already pricing this in. War risk premiums for Bab el-Mandeb transits reached 0.5% of hull value in 2025, with spikes to 1-2% during peak threat periods. For the Strait of Hormuz, premiums have surged past 1% and some insurers are cancelling coverage entirely.

For a VLCC worth $120 million, a 1% war risk premium means $1.2 million per transit — on top of the standard insurance, fuel, and operational costs. When premiums cross a threshold, the insurance market effectively closes a chokepoint before a single missile is fired. Shipowners simply stop sending vessels because they cannot get coverage.

This is what happened at Hormuz. And it is what could happen at Bab el-Mandeb if Houthi threats materialize into systematic attacks.

Who Gets Hurt

European refiners lose access to their primary crude supply route. Brent crude, already at $109 per barrel, could spike to $120-130 if Bab el-Mandeb faces sustained attacks.

Container lines that rerouted from Suez to the Cape of Good Hope in 2024 are already on that route. A Bab el-Mandeb closure would confirm this as semi-permanent, reshaping global logistics.

Seafarers — the 20,000-plus crew members already stranded in the Gulf — face an even longer wait. Vessels that might have exited southward through the Red Sea would lose that option entirely.

Asian economies dependent on Middle Eastern energy — Japan, South Korea, India, the Philippines — face sustained supply disruption and fuel price inflation.

The Precedent That Should Worry Everyone

The Safeen Prestige, a 1,740-TEU container ship struck by an Iranian missile on March 4, was confirmed sunk on April 1 near the Musandam Peninsula. It is the first total vessel loss of this crisis. Satellite imagery from the EU's Copernicus system shows the ship catching fire on March 28 and disappearing by April 2, leaving only an oil sheen.

A sunk merchant vessel in one of the world's busiest shipping lanes is not just a casualty. It is a navigational hazard, an environmental incident, and a signal to every shipowner calculating whether to transit.

Bottom Line

Iran's Bab el-Mandeb threat is not hypothetical — the infrastructure for disruption already exists via the Houthis, and the playbook was tested in 2024. If both chokepoints close simultaneously, a quarter of the world's oil supply would be stranded behind a blockade with no short-term workaround. The insurance market, not the military, will determine when and whether ships attempt these transits. Watch the premiums. They tell you more than the headlines.