More than fifteen anti-Houthi brigades left Yemen's west coast in a week. As many as thirty thousand fighters retreated. Houthis hold Mocha, Dhubab, and Perim Island at Bab el-Mandeb. EIA already shows more oil moving that gate than Hormuz. Italy is sending escorts.
The Guardian reported Friday that more than fifteen brigades were defeated as Yemen’s entire west coast fell to the Houthis, with perhaps thirty thousand well-equipped fighters leaving the line. Some Yemeni politicians now talk of billions offered to abandon the coast. The UN-recognised camp is running an inquest and trying to reorganise toward the Kahboub heights, the ridge from which anyone can still squeeze movement toward the strait.
That is the dominant story: a Sana’a offensive that inverted into a Tihama rout, command fracture, missing air cover, and a hunt for scapegoats. It is a real Yemen story. It is not yet an oil mechanism.
A week ago Mocha sat forty-seven miles north of the Gate of Tears, and six Bab el-Mandeb transits were not a second Hormuz. If the residual then was Iranian command, what changed is the map under the substitute barrels.
The backup lane already carried more oil
The U.S. Energy Information Administration’s summer outlook put crude and petroleum liquids through Hormuz at 4.9 million barrels a day in the second quarter, down from 21.6 million in late 2025. Bab el-Mandeb ran 8.1 million, up from 5.4 million, as Saudi cargoes left the Gulf by the East-West line to Yanbu. The backup became the busier oil gate while the primary one was still impaired.
UNCTAD’s 12 to 15 percent of global trade that used to be cited for Suez is the same corridor’s northern door. Bab el-Mandeb is the southern one. Dual stress is not “another flare-up in Yemen.” It is a network with two thin nodes.
Government sources told Anadolu the Houthis took Dhubab and Perim — Mayyun — on September 11, the volcanic island that splits the strait. BBC witnesses and a local official speaking to AFP described a completed takeover of the Bab al-Mandab area. Kahboub remains contested: Arab News still had fighting on the heights Thursday; Yemen Monitor’s government sources claimed the ridge back the same day. The island and the west-coast ports are the new facts. The mountain is the argument.
Beijing already asked Tehran, after Riyadh asked Beijing, to keep Houthi fire off that remaining energy corridor. Aramco is still patching Petroline and transferring crude off Oman. Those workarounds assume a Red Sea that can still be insured.
Freight has been saying the same thing in dollars. Windward tracked fourteen Saudi-flagged ships around the Cape of Good Hope since late July rather than the strait, ten to fourteen extra days and close to a million dollars a voyage. Hellenic Shipping News, citing broker tape this month, had VLCC traffic through Bab el-Mandeb about eighty percent below the second quarter, with roughly half of remaining Red Sea oil heading via SUMED or Suez and then the Cape. Baltic TD3C, the Middle East Gulf–China VLCC print, crossed a million dollars a day — a Hormuz-risk number that does not get cheaper if the substitute gate is now a Houthi shore.
Italy treated that as a national bill. Defence Minister Guido Crosetto said Rome would not wait for Operation Aspides to decide whether Italian hulls may pass. Al Jazeera reported the warship plan; ANSA then logged the frigate Carlo Bergamini escorting the merchant Jolly Oro northbound under Aspides, a two-day transit. That is not a closed strait. It is a strait that now requires a grey hull.
Hormuz is the impaired primary. Bab el-Mandeb is the substitute that just acquired a coastline.
What still mis-prices is filing Friday’s inquest as local military gossip while Brent and diesel stay a “Gulf” story. Hormuz already showed what a bottleneck can force. The watch from here is boring and decisive: AIS diversions and Cape counts, VLCC and Suezmax fixtures out of Yanbu, Saudi air or ground movement toward Taiz and Lahij, and any Houthi notice that widens targeting from Saudi-linked ships to general commercial traffic. A durable government hold on Kahboub plus a published Houthi navigation guarantee that markets actually use would shrink the residual. A mine, a pad on Perim, or a second week of six-ship days would finish the argument the inquest is still having about money and morale.
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Sources
The Guardian Sept. 18 on the anti-Houthi inquest, 15-plus brigades, and ~30,000 fighters; Guardian/BBC/Anadolu on Perim/Mayyun and Dhubab; EIA STEO on Hormuz 4.9 mb/d vs Bab el-Mandeb 8.1 mb/d in 2Q26; Al Jazeera and ANSA on Italy’s escorts and Crosetto; Windward/Hellenic on VLCC rates and Cape diversions; UNCTAD on the Suez trade share.
