The largest Houthi territorial gain since the 2022 truce puts a second maritime chokepoint in play while the first, the Strait of Hormuz, remains contested.
Iran-backed Houthi forces captured the Yemeni port city of Mokha on Thursday, September 10, confirmed by both Houthi and Yemeni government officials. Mokha sits roughly 50 miles from the Bab el-Mandeb Strait, the waterway connecting the Red Sea to the Gulf of Aden and, beyond it, the Suez Canal route. Roughly 12% of global trade transits that passage in normal conditions.
This is the Houthis' largest territorial gain since a 2022 truce ended active fighting in Yemen's civil war.
Hans Grundberg, the UN special envoy for Yemen, said "this renewed war should alarm us all," describing it as a "new and more dangerous phase." Yemen's UN Ambassador Abdullah Al-Saadi urged the Security Council to condemn the escalation and to restrict arms supplies to the Houthis.
The strategic point is that there are now two chokepoints, not one
The Strait of Hormuz has dominated energy-security coverage for months, and for good reason: it is dominated by crude and refined-product tanker traffic, and Iran has impeded transit through it during the current conflict. Bab el-Mandeb carries a different traffic composition, weighted toward containers and product tankers heading for Suez.
The compounding effect is what matters. Cargo diverted away from Hormuz and cargo diverted away from Bab el-Mandeb do not have the same alternative routes. Red Sea traffic reroutes around the Cape of Good Hope, adding roughly ten to fourteen days and substantial fuel cost. Hormuz traffic has no comparable workaround for Gulf-origin crude. A shipper facing risk at both passages is not facing twice one problem; it is facing two problems with different solutions and different costs.
The market response was partly priced before this week
Shipping through Bab el-Mandeb has already declined roughly 60% since Houthi attacks on vessels began in late 2023. That is the strongest argument that the incremental news here is smaller than the headline suggests: the traffic that could reroute largely has, and what remains is either risk-tolerant or has no alternative.
The counterargument is that territorial control of a port city is a different capability from standoff attacks on passing vessels. Saudi crude that had been rerouted through Red Sea pipelines to the port of Yanbu is now facing renewed Houthi threats that have curtailed that alternate routing, which removes one of the workarounds built in response to the earlier campaign.
The market leaned toward the escalation reading in at least one place. The Breakwave Tanker Shipping ETF rose 11.4%, one of the largest gains on U.S. exchanges that session, while crude itself fell roughly 3%. That combination is consistent with a market pricing higher transport risk on lower expected volumes.
No oil-price or freight-rate move has been separated out and pinned to the Mokha seizure specifically, as distinct from the broader conflict. The figures that would settle it are Red Sea transit volumes, marine war-risk insurance premiums, and any maritime advisory issued specifically for Bab el-Mandeb. Those are the next things worth reading.