Red Sea Horn · Red Sea & Yemen
Reference: RSH/REDSEA/2026-01 | Coverage period: 3–15 September 2026 | Published: 15 September 2026
This week
The Houthi movement is no longer fighting one war. It is holding a shooting front against Yemen’s government inland while opening a second, maritime front at Bab al-Mandeb — and this week both fronts moved at once.
1. The land war
The Ceasefire That Was Never Actually Signed
Heavy fighting broke out between the Houthis and Yemen’s Presidential Leadership Council (PLC) on 3 September, the sharpest escalation of the civil war in months. The UN’s Special Envoy for Yemen had already warned in August of a “more serious risk of return to large-scale conflict,” pointing partly to Houthi strikes on Saudi Arabia’s Abha airport in July. On the southern side of the PLC coalition, the Southern Transitional Council collapsed as a formal player in January — its leader Aidarus al-Zoubaidi was removed from the Presidential Council, charged with treason, and fled to the UAE after a rapid PLC counter-offensive reversed STC territorial gains. But the forces themselves did not disappear: the Support and Reinforcement Brigades, which fought alongside the old STC security forces, announced full combat readiness this month and called on the wider Southern Resistance to unite. A civil war that looked like it was consolidating into two sides in January now looks like it may fragment into three or four. — House of Commons Library; UN Special Envoy briefing, August 2026.
2. The maritime war
From Threatening Ships to Owning the Water
Houthi forces captured Mayun island, at the mouth of the Red Sea, on 12 September, then took the Hanish Islands further south two days later — physical control of terrain that commands the shipping lane, not just the ability to strike it. Saudi Arabia shut down a major oil pipeline as a precaution. Insurers were already pricing a Red Sea transit above a Cape of Good Hope detour before the islands changed hands; holding the ground itself gives the Houthis a harder, longer-term form of leverage over the strait than missiles and drones alone ever did. — NPR, 12 September; Washington Times, 14 September; Bloomberg, 10 September.
Briefing points
- The Houthis now hold enough of the southern Red Sea’s actual geography that a negotiated shipping deal would have to go through them, not around them.
- The STC’s formal collapse in January did not end southern Yemeni military capacity — it just removed its political umbrella, which usually makes a conflict harder to close, not easier.
- Riyadh’s pipeline shutdown is a tell: Saudi Arabia is treating its own oil infrastructure as a Houthi target, not just Red Sea shipping lanes.
Bottom line
Two years of “the Houthis threaten shipping” coverage undersold what just happened: they took islands, not just shots. Any future talks over Red Sea security now have to reckon with a Houthi movement that holds ground, not just missiles.
References
House of Commons Library, “Yemen in 2026: STC’s fall and intensifying Houthi conflict,” commonslibrary.parliament.uk.
NPR, “Yemen’s Houthis capture a Red Sea island in threat to shipping,” 12 September 2026, npr.org.
Washington Times, “Yemen’s Houthi rebels nab key islands in Red Sea, tighten grip on shipping,” 14 September 2026, washingtontimes.com.
Bloomberg, “Houthi Attacks: How They Threaten Red Sea Shipping and Saudi Oil,” 10 September 2026, bloomberg.com.
Abdinasir Hassan Timoweyne is Founder and Director of the Nexa Centre and Senior Lecturer in International Relations at New Generation University. He is the author of several published articles on Horn of Africa and Middle East politics.