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On September 11, 2026, Houthi forces took control of Perim Island, a 13-square-kilometer landmass sitting at the center of the Bab al-Mandab Strait. The seizure came just one day after the group captured the port city of Mokha, suggesting a coordinated offensive along Yemen’s Red Sea coast rather than opportunistic skirmishing.
Pro-government forces apparently retreated from the island without a prolonged fight, handing the Houthis a strategic prize that most military planners would have considered a nightmare scenario even a year ago.
Why a small island matters enormously
Perim Island sits directly in the Bab al-Mandab bottleneck, physically dividing the strait into two navigable channels.
The strait handles an estimated 10 to 12 percent of global seaborne trade during stable periods. That figure includes a substantial share of Europe-bound oil and Asian consumer goods. Whoever controls Perim Island holds a position from which they can monitor, harass, or threaten virtually every vessel passing through both channels.
Analyst Ahmed Nagi noted that the Houthi takeover places their forces roughly 90 kilometers closer to the strait than their previous positions. In practical terms, that shortens the response time for any anti-ship missile or drone strike to a window that gives commercial captains very little margin to react.
The Houthis have stated publicly that navigation remains safe for non-Saudi vessels, a carve-out that sounds reassuring until you remember that the group’s definition of a hostile vessel has shifted several times since 2023.
Oil markets feel the pressure immediately
Brent crude and WTI benchmarks have both crossed $100 per barrel in the wake of the escalating tensions surrounding this offensive. The timing compounds an already uncomfortable situation for energy markets, because Saudi Arabia has been rerouting oil exports through the Red Sea via its East-West pipeline after disruptions in the Strait of Hormuz tied to ongoing US-Iran tensions.
In other words, the bypass route that Saudi Arabia set up to avoid one chokepoint now runs directly through waters adjacent to a second chokepoint that Houthi forces just made significantly more dangerous.
Carriers who cannot absorb the cost start discussing alternative routes around the Cape of Good Hope, adding roughly two weeks and significant fuel costs to a Europe-Asia voyage.
The broader regional picture
The Houthis, formally known as Ansar Allah and backed by Iran, have been a persistent threat to Red Sea shipping since their attacks on commercial vessels intensified in late 2023. What changed with the Perim Island seizure is the physical foothold. Prior operations relied on land-based launch infrastructure spread across Yemen’s coastal terrain. A garrison on Perim Island would allow the group to position assets at the strait’s narrowest point, compressing the geographic buffer that naval escorts depend on.
The fall of Mokha on September 10 followed by the island seizure the next day suggests the Houthis moved faster than coalition forces anticipated, or that pro-government units along that stretch simply lacked the will to hold.
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