# Bab el-Mandeb The **Bab el-Mandeb** — Arabic for "Gate of Tears" — is the strait at the southern end of the Red Sea, separating Yemen on the Arabian Peninsula from Djibouti and Eritrea on the Horn of Africa. It is the only sea entrance to the Red Sea from the Indian Ocean, and therefore the southern gate on the Suez Canal route between Asia and Europe. Together with the [[Strait of Hormuz]] it is one of the two maritime chokepoints that give Iran and its proxies leverage over a quarter of the world's seaborne oil. The strait matters to this KB for a specific reason: it is the mechanism by which a regional proxy war converts into an American kitchen-table price. Nothing the [[Houthis]] do in Yemen reaches an American voter except through freight rates, diesel, and the pump. ## Geography The strait is roughly 18 miles wide at its narrowest. **Perim Island** (Mayyun), a small volcanic island with its own airstrip, sits inside it and divides the passage into two channels — a narrow western channel next to Perim and a wider eastern one. Whoever holds Perim holds the tightest point of the strait, which is why Saudi-backed Yemeni forces spent years keeping it out of Houthi hands. North of the strait, the Red Sea runs about **1,400 miles** to the Suez Canal, which connects it to the Mediterranean. Diana Roy of the [[Council on Foreign Relations]] wrote in July 2026 that the Red Sea route carries **twelve to fifteen percent of global maritime trade annually, worth roughly $1 trillion**. ## Why it is a chokepoint and not merely a strait A chokepoint is defined by the cost of the detour, not by its own width. Ships denied the Bab el-Mandeb must round the Cape of Good Hope, adding roughly 10–14 days to an Asia–Europe voyage plus fuel and war-risk insurance. During the 2023–2025 Red Sea campaign that rerouting alone was estimated to have cost global trade **$80+ billion**. The strait's leverage is thus a function of geography that no policy can change. ## The two-chokepoint problem The reason the vault treats Bab el-Mandeb and the [[Strait of Hormuz]] as one subject rather than two is that a single actor now influences both ends of the Arabian Peninsula: | | Strait of Hormuz | Bab el-Mandeb | |---|---|---| | Connects | Persian Gulf → Gulf of Oman / Arabian Sea | Red Sea → Gulf of Aden / Arabian Sea | | Narrowest width | ~21 miles | ~18 miles | | Controlling shores | [[Iran]] and Oman | Yemen; Djibouti and Eritrea | | Pre-war oil transit | ~20 million bbl/day | ~4–5 million bbl/day (varies with rerouting) | | Status, September 2026 | Largely closed since the opening of the [[Iran War 2026]] | Yemeni shoreline under Houthi control as of Sept. 11 | With Hormuz largely closed, Saudi Arabia's remaining seagoing export route ran north through the Red Sea and out through the Bab el-Mandeb. That is the specific vulnerability the September 2026 offensive attacked: not the volume of oil in the strait, but the *last* route out for a producer whose other door was already shut. The oil reached that route by land. The [[East-West Crude Oil Pipeline]] carries Saudi crude about 1,200 kilometers from the Eastern Province to Yanbu on the Red Sea, and had been running four to five million barrels a day since Hormuz closed. On September 11, 2026 drones launched from Iraq forced it shut. The strait and the pipeline are therefore one system with two failure points, and in the second week of September both were hit. ## The September 2026 Houthi offensive In an offensive that ran roughly eighteen hours, the [[Houthis]] took the whole of Yemen's Red Sea coastline and the islands commanding the strait. | Date | Development | |------|-------------| | September 8, 2026 | Houthi drone and missile attacks strike civilian and economic facilities in Abha, Jazan, Najran and Khamis Mushait in southern Saudi Arabia, igniting fires at oil facilities. The Saudi-led coalition reports **73 wounded**, including women and children. Jazan hosts a 400,000-barrel-per-day refinery, among the kingdom's largest. Operations at some energy facilities halt. | | September 10, 2026 | The Houthis seize the Red Sea port city of **Mocha** (Mokha) from government forces, and take **Zuqar Island** in the southern Red Sea after rocket attacks and a boat-borne ground assault. | | September 10, 2026 | CNN reports that **more than 100 U.S. military advisors** are in Saudi Arabia as part of a newly established joint forces command, providing intelligence and helping Saudi forces identify targets; one U.S. official put the total American personnel figure closer to 200. U.S. sources emphasize the United States is neither striking nor providing operational support. Reporting by Zachary Cohen, Katie Bo Lillis and Kylie Atwood. | | September 10, 2026 | Brent crude spikes almost 8 percent, from about $101 to **$109 a barrel** — the highest since May. | | September 11, 2026 | Houthi fighters reach **Perim Island** — also called **Mayun** — after government forces withdraw, along with the town of Dhubab and the coastal village of Murad, completing control of the Yemeni side of the strait. | | September 11, 2026 | The Houthis issue a statement declaring that **"maritime navigation is safe for all companies except for Saudi vessels,"** vowing to strike Saudi targets until what they call the aggression and blockade end. The exemption is the point: it converts the strait from a general hazard into a weapon aimed at one country. | | September 11, 2026 | Saudi Arabia shuts the **[[East-West Crude Oil Pipeline]]** — the line feeding oil to this route — after drone strikes launched from Iraq hit it in the Riyadh and Medina areas. Both ends of the kingdom's last export corridor are attacked inside forty-eight hours. | U.S. officials told CNN that hundreds of [[Islamic Revolutionary Guard Corps]] officers are in Yemen working with the Houthis, with the aim of shutting the strait — what CNN had previously reported Iran regarded as an economic "nuclear option" should negotiations fail. > [!warning] Control of a shoreline is not closure of a strait > Holding the Yemeni coast and Perim gives the Houthis the ability to *contest* passage; it does not by itself close an international waterway whose far shore is Djibouti and Eritrea and whose traffic multiple navies escort. Whether transit actually stops is an open question as of 2026-09-11, and this page records capability, not outcome. ## The transmission belt to American prices The chokepoint's political significance in the United States runs through [[Gas Prices]]: - Saudi production in August 2026 fell to about **6.2 million barrels per day**, its lowest since 1990, against a pre-war level near 10 million. - Brent hit **$109** on September 10. - The U.S. average for regular gasoline was about **$4.27–$4.28** a gallon on September 10 — the highest September price on record. - The national average for **diesel crossed $6.00 a gallon for the first time in history**, per GasBuddy on September 10; AAA put it at **$6.06** on September 11. Diesel was near $3.70 a year earlier. Diesel is the variable that carries the strait into a grocery bill. GasBuddy's statement made the mechanism explicit: diesel "is the fuel that moves the economy, powering the freight trucks, trains, agricultural equipment, and construction machinery behind nearly everything Americans buy," so supply-chain costs work through to "groceries, household goods, deliveries" for households that never buy a gallon of it. Patrick De Haan, GasBuddy's head of petroleum analysis, called the record "likely to reignite inflation up and down the supply chain." This is the same causal chain the [[Gas Prices]] page describes in reverse: an event roughly eight thousand miles away, over which no president has meaningful control, arriving as a number posted on a sign at the corner and read as a verdict on the administration. The [[Affordability]] issue page records that gas prices were the sharpest grievance in late-August polling on the war. ## Historical note The strait has been a military prize for as long as the Suez route has mattered. Britain garrisoned Perim from 1857 precisely to hold the approach to the Red Sea, and the island's value has never depended on its size — only on where it sits. The 2026 offensive is a new occupant of a very old position. ## See Also - [[Strait of Hormuz]] - [[East-West Crude Oil Pipeline]] - [[Houthis]] - [[Iran]] - [[Iran War 2026]] - [[Iran War 2026 Timeline]] - [[Saudi Arabia]] - [[Islamic Revolutionary Guard Corps]] - [[Gas Prices]] - [[Affordability]] - Naval Strategy - [[Law of the Sea]] - [[OPEC]] - [[Council on Foreign Relations]]