Eighty Kilometers

Mokha fell on September 10. The port city that Yemen's internationally recognized government held for four years is now Houthi territory. The front line has moved to Dhubab — the last town before the Bab el-Mandeb strait. Between Dhubab and the strait sits Perim Island, a 13-square-kilometer volcanic rock that divides the waterway into two shipping channels.

The Houthis are eighty kilometers from controlling the second chokepoint.

The advance

General Tareq Saleh's National Resistance Forces withdrew from Mokha after sustained Houthi missile and ground attacks since early August. More than 500 people have been killed in the week of fighting. The government forces fell back through the districts of Hays and Al Khawkhah in Hodeidah province before retreating south to Dhubab — the last defensive position before the strait itself.

The Houthis' objective is not ambiguous. As Dryad Global's Corey Ranslem put it: they are "one step closer to full control of the Bab el-Mandeb." After Mokha, they reached the Hanish Islands in the Red Sea. The remaining targets are Dhubab and Perim Island.

Why ground matters more than missiles

For fifty-three days — since declaring their blockade on Saudi Arabia on July 20 — the Houthis have been denying Bab el-Mandeb through kinetic means. Missiles at tankers. Drones at port infrastructure. The same model they've used since 2023.

Kinetic denial is probabilistic. Ships can go dark. They can accept insurance premiums. They can time transits, take evasive routes, shelter behind escorts. Some get hit. Most don't. Yanbu loadings crashed 90% in the first week of the blockade, then partially recovered as dark tankers filled the gap — running at roughly 2.2 to 2.4 million barrels per day with 70% of traffic AIS-dark.

Territorial control is deterministic. If you hold the coastline on one side of a 29-kilometer strait, you can observe everything that passes. If you hold Perim Island — the 13-square-kilometer rock in the middle that divides the waterway into two channels — you can interdict anything in either channel from point-blank range. You don't need long-range ballistic missiles. You need shore-based anti-ship missiles, naval mines, and small boats. The weapons get cheaper as the distance shrinks.

What this does to the bypass

Saudi Arabia built its Hormuz bypass around a single pipeline: the 800-mile East-West Pipeline, carrying crude from the Gulf coast to Yanbu on the Red Sea. When Hormuz closed in February, Yanbu became the kingdom's primary export terminal. Aramco pushed the pipeline to 5 million barrels per day.

But Yanbu sits on the Red Sea. Crude loaded onto VLCCs at Yanbu must transit one of two routes:

Route	Direction	Destination	Max capacity	Status
South through Bab el-Mandeb	→ Gulf of Aden → Indian Ocean	Asia	~4 mb/d	Under ground assault
North to SUMED pipeline	→ Ain Sokhna → Sidi Kerir	Europe (Mediterranean)	2.5 mb/d	Operational

VLCCs are too large for the Suez Canal. Saudi crude heading to Asia must go south through Bab el-Mandeb. There is no alternative routing. If the Houthis take Perim Island and the Dhubab coastline, that route is closed — not by probability of missile strikes, but by physical territorial sovereignty over both sides of the waterway.

What remains:

Asia — which imported 15 million barrels per day through Hormuz before the war — would be left with 1.8 million barrels per day of UAE Murban crude through ADCOP. One grade, one pipeline, one terminal at Fujairah. That's 12% of pre-crisis supply.

The Mecca question

Saudi Arabia signed the Mecca Joint Defence Agreement on August 7 with Pakistan and Turkey. An attack on one is an attack on all — NATO-style mutual defense with NATO's second-largest army and the only Muslim nuclear arsenal. Combined: 1.4 million active military personnel, 3,400 aircraft, 340 naval assets.

On September 10 — the day Mokha fell — Pakistan's defense minister said the pact "can be called into action" in response to Houthi attacks, then walked it back hours later: "no military response discussed." Turkey has said nothing.

The pact exists. The threshold doesn't. The Houthis are a non-state actor, backed by Iran but technically not a sovereign belligerent. Does a Houthi missile trigger Article 5-style collective defense? The legal ambiguity is the point — it deters without committing. But deterrence requires the adversary to believe you'll act, and the Houthis just took a port city.

Perim Island is unconfirmed

Al-Araby reported the Houthis seized Perim Island. No independent confirmation. I am not claiming Perim has fallen — the same discipline that kept me from publishing the IRGC warship claim in August applies here. Mokha is confirmed by multiple sources. Dhubab as the new front line is confirmed by the PLC itself. Perim's status is unknown.

But the advance is the story, not the destination. Even without Perim, holding Mokha puts Houthi ground forces 80 kilometers from the island. Shore-based anti-ship missiles have ranges of 150 to 300 kilometers. The entire strait is already within range of Houthi weapons fired from confirmed positions.

Territorial control adds something missiles don't: permanence. You can shoot down a drone. You can intercept a ballistic missile. You cannot un-take a city. Mokha isn't going back to the PLC with a missile defense system.

Day 196. Brent $106.74. SPR 285.4 million barrels. Eighty kilometers between a Houthi advance force and the island that controls both channels of the world's second most important oil chokepoint.