Houthi Fighters Take Yemen's Perim Island in Bab al-Mandeb Strait, a Day After Seizing Mokha Port

Two Islands, Two Days, One Number Everyone Got Wrong

By Friday evening, Houthi fighters controlled a stretch of Yemen's Red Sea coast that had eluded them for years. On Thursday, September 10, 2026, they took the port of Mokha after government-aligned units, including the Giants Brigades and Nation's Shield, took casualties and fell back south of the city^[5][12]. Overnight, government forces pulled off Perim Island, and Houthi fighters arrived by boat^[3][4]. Saudi-led coalition jets struck the Houthi-held Mokha airport that same Friday^[14].

Here's the part that trips up the coverage. Oil did close the week above $100 a barrel for the first time in nearly four months^[9]. But that happened on Thursday, before the island changed hands. On Friday, the day Perim actually fell, both benchmark oil prices fell too — Brent eased to around $105 after briefly topping $108, and WTI dropped 2.43% to $99.99^[8][15][16]. The price mattered before the territory did, not because of it.

A Speck of Land Worth More Than Its Size

Perim, also called Mayyun, is a small island about 2 miles off Yemen's coast. It sits almost exactly in the middle of the Bab al-Mandeb Strait, the passage between the Red Sea and the Gulf of Aden^[14]. The U.S. Energy Information Administration says the strait narrows to about 18 miles wide at its tightest point, and tanker traffic there gets squeezed into two shipping lanes, each roughly 2 miles across^[10].

That geography is why a small island matters so much. Whoever holds Perim doesn't need warships to threaten the ships passing by. They just need something with range and a clear line of sight across 2 miles of water^[14]. That's a cheap way to make a very expensive stretch of ocean feel dangerous.

The stakes are high because of how much oil actually moves through here now. Total oil flows through the strait hit 8.1 million barrels a day in the second quarter of 2026 — about 8% of the entire world's supply^[1]. That's already more than double the 3.7 million barrels a day of crude and condensate that passed through in early 2025, though those two figures measure slightly different things — total oil flows versus crude and condensate alone — so the exact multiple isn't precise^[10].

Much of that increase is spillover. Traffic through the Strait of Hormuz, the other major oil gateway near Iran, collapsed from 21.6 million barrels a day in late 2025 to just 4.9 million by the second quarter of 2026 amid the wider regional war^[11]. Those barrels didn't disappear. They rerouted here, which is exactly why a disruption at Bab al-Mandeb now carries more weight than it once did.

The System Just Lost Its Backup Plan Too

This is the fact that's easy to miss in the noise around Perim. In the same 48-hour window as the island's fall, Saudi Arabia's East-West pipeline, known as Petroline, was struck and temporarily shut down^[19]. That pipeline is the traditional overland bypass for crude that can't move through Hormuz — the backup route when the sea lanes get too risky.

Satellite imagery reviewed by Reuters and confirmed by Saudi state media showed the strike and the shutdown^[19]. So in the span of two days, one of the last open sea chokepoints saw a hostile force move onto an island in the middle of it, and the main land alternative got knocked offline too. Neither event alone closed anything. Together, they narrowed the options left if either one worsens.

The alternative to sailing through Bab al-Mandeb is a trip around the southern tip of Africa, adding weeks of travel time and real cost to every cargo^[10]. That's the backstop that's left if shippers decide the risk here is too high, whether or not the Houthis intend to close the strait themselves.

Whose War Is This, Really

The Houthis say this is simply Yemenis retaking Yemeni territory. Perim is a Yemeni island. Mokha is a Yemeni port. In their account, the forces that held these places for years were backed and paid by a foreign coalition that spent years bombing Yemen. Houthi military spokesman Yahya Saree said Friday evening that shipping remains safe for everyone except Saudi vessels, which the group had already barred^[1]. That's a specific, narrower threat than "we're closing the strait" — and it's the strongest card in their argument.

Holding the coast converts a threat that used to require missiles and drones into something cheaper and harder to stop: a physical position with a gun 2 miles from the shipping lane^[14]. That's leverage worth more at a negotiating table than a missile that can be intercepted.

Saudi Arabia and Yemen's internationally recognized government see something else entirely: an Iranian-directed operation executed through a proxy. Yemeni, Iranian and regional sources describe Iran's Revolutionary Guard as guiding the offensive^[1]. Riyadh points to precedent — coalition forces cleared Perim of Houthi fighters once before, in 2015, precisely because control of that island can threaten a global waterway. It also points to missile and drone strikes on Saudi cities that injured at least 73 civilians as evidence this has become an interstate war, not a domestic one^[5].

The United States largely backs the Saudi framing. U.S. officials say hundreds of IRGC officers are inside Yemen working to help close the strait^[6][7]. After Houthi attacks on two Saudi tankers in July, the administration said it holds Iran responsible for further attacks and has warned of "major military punishment" against both parties^[6]. With Hormuz traffic already down sharply, the reasoning goes, losing a second chokepoint without a response signals that chokepoints are cheap to take.

Iran denies directing the offensive and casts the Houthi advance as Yemenis reclaiming their coast from what it describes as a Saudi-backed occupation. Tehran also argues its own shipping has faced blockade pressure from the U.S. and Israel since their 2026 war on Iran, framing any pressure on Western-aligned traffic as defensive rather than aggressive.

Whoever Wins the Argument, the Truce Was Already Dead

It's worth separating what changed this week from what changed months ago. The offensive that took Mokha actually began in July 2026, breaking a loose, four-year understanding between the Houthis and Saudi Arabia. Perim was the next step in a campaign already underway, not the moment things fell apart.

That timeline matters for judging the "control of the strait" claims that some outlets ran with this week. No source has reported the strait itself closed, and Houthis have publicly exempted all non-Saudi shipping^[1]. The strait also isn't bordered only by Yemen — Djibouti and Eritrea sit on the other side, and a wider channel runs past them. So "taking the strait" describes a new capability to threaten ships, not a demonstrated closure of the waterway.

Underneath the dueling claims sits a shared, unglamorous reality: shipping companies and insurers mostly want predictability, not a particular political outcome^[1]. Aid groups, meanwhile, point to a heavier toll. The war that the 2022 truce had paused killed roughly 150,000 people and pushed much of Yemen's 40 million people toward famine conditions^[14]. Mokha was the largest government-held city on the west coast before this week. It no longer is.

How the Story Got Told Depended on Who Was Telling It

Coverage of the same two days split along familiar lines. Fox News led with Iran's role, running headlines like "Iran pushed Houthis to capture Yemeni Red Sea ports," making Iran the grammatical subject and the Houthis the object of the sentence — Yemen's own civil war barely appeared^[6][7]. NPR and CNN kept the "Iran-backed" label but pivoted quickly to consumer costs, running a companion piece on how the gains could push U.S. gas prices higher, giving less space to what Washington might actually do^[8][13].

Al Jazeera reported from Taiz and gave prominent placement to the Houthi line that shipping remains safe except for Saudi vessels, using the softer word "gains" rather than "grab"^[4]. CGTN's account was the flattest of the group: government troops withdrew, Houthis moved in, sourced to a Yemeni official, with no U.S. policy angle and barely a mention of Iran^[3]. The Associated Press led with the Saudi airstrike rather than the Houthi seizure and used "rebel-held" instead of harsher language, while also carrying the death toll and famine risk that market-focused pieces tended to drop^[14]. Euronews made the boldest claim of any outlet, saying Houthis were "taking control of the strait" — language that goes further than what any source actually documented^[1].

What happens next likely hinges on whether the Houthis' promise to spare non-Saudi shipping holds, and whether Saudi Arabia's damaged pipeline comes back online before the next flashpoint. Neither question has an answer yet.