Perim Island no longer under Houthi control by October 31?

- [2026-09-10] On 10 September, the Houthis seized control of the port city of Mokha, and the next day the group captured Perim Island in the middle of the Bab al-Mandab Strait, gaining control over Yemen's west coast . Media reported IRGC advisers were present and provided direct support during the offensive . [Security Council Report, 2026-10-01] - [2026-09-11] Yemen's Iran-backed Houthis took control of Mayyun Island, also known as Perim, after a local government official said boats carrying armed Houthi fighters reached the island after government forces withdrew the day before . (Kurdistan24/AFP) - [2026-09-11] The Houthis captured the Red Sea port of Mokha on September 10 and reached Perim the following day after Yemeni government forces withdrew; they also seized the Greater and Lesser Hanish islands farther north . (intellinews, 2026-10-05) - [2026-09-20] Former Royal Navy commander Tom Sharpe argued Perim's capture did not fundamentally change shipping's exposure to Houthi missiles/drones from the mainland, but holding the island improved the rebels' observation, command and intelligence capabilities and removed a position from which Yemeni government forces could interfere . - [2026-09-21/22] Yemeni armed forces reportedly said that they had retaken strategic positions in the highlands and in Taiz governorate from the Houthis , near the Kahboub mountains — but this fighting was on the mainland, not Perim itself. - [2026-09-18] Security Council members issued a press statement condemning continued Houthi attacks on Saudi Arabia and commercial shipping, and the "ongoing Houthi military escalation in Yemen," while reaffirming support for Yemen's government . - [2026-09-22/24] France said it would provide "soldiers, radars and defense systems" to Saudi Arabia, and the UK announced its military would provide air-to-air refuelling of Saudi planes , while the US "seems to have opted not to get directly involved in the conflict with the Houthis" and cancelled planned strikes. - [2026-10-01] As of the latest UN Security Council monthly forecast (posted 1 October), there is no mention of any change of control on Perim Island since the September capture; the island is treated as Houthi-held territory as part of the "full resumption of hostilities" and collapse of the 2022 truce. - [2026-10-04] Rashad al-Alimi, the Saudi-backed head of Yemen's Presidential Leadership Council, announced the start of military operations to retake the remaining territory held by the Houthis and restore state authority across the country; the Saudi-led coalition pledged its full support for the operation the same day . - [2026-10-05] In a televised speech, al-Alimi said the government had ordered "military operations to restore the remaining territory of the republic and extend state authority nationwide," and the Saudi-led coalition spokesman said the coalition would continue supporting Yemeni government forces . The Houthis continued their own offensive, reportedly seizing more towns in southwestern Taiz province near the strategic Bab el-Mandeb Strait — indicating the front is still fluid and contested, with no reported assault specifically on Perim island itself yet. - [2026-10-05] No source found reporting any landing, assault, or change of control on Perim/Mayyun Island itself since the September 11 Houthi capture; all subsequent fighting reported is on the Yemeni mainland (Taiz, Kahboub mountains, Dhubab area). BOTTOM LINE: Perim Island has been under confirmed Houthi control since September 11, 2026, and remains so as of October 5. A Yemeni government/Saudi-coalition counter-offensive was only just announced (October 4) to retake lost territory nationwide, but no fighting or landing specifically targeting Perim has yet been reported, making a change of control on the island by October 31 require a very rapid, still-unplanned military operation. NOT FOUND: Any report of a landing, naval assault, or negotiated handover specifically targeting Perim/Mayyun Island itself since September 11; any official Yemeni government or coalition statement naming Perim as a near-term target of the October 4 counter-offensive; any satellite or on-the-ground confirmation of current Houthi garrison strength on the island.

- [2026-09-11] Houthi forces captured Perim/Mayyun Island as Yemeni government troops withdrew overnight, completing Houthi control of the Bab el-Mandeb region; confirmed by multiple Yemeni government and Houthi sources. Houthi forces took control of Perim Island, also known as Mayun Island, on Friday after government troops withdrew overnight, adding the Houthis now have a "full grip over the Bab al-Mandab area." - [2026-09-20] Analysts were split on durability of the Houthi hold: a former Royal Navy commander argued the island's capture did not fundamentally alter the strategic balance, implying contestability rather than permanence. Former Royal Navy commander Tom Sharpe argued in commentary republished by the Australian Naval Institute on September 20 that Perim's capture did not fundamentally change shipping's exposure to Houthi missiles and drones launched from the coast. - [2026-10 forecast] The UN Security Council's October monthly forecast frames Perim's loss as part of a broader collapse of the 2022 truce, with diplomatic emphasis on a Yemeni-led political settlement rather than imminent military reversal. In September, Yemen experienced a significant increase in hostilities, unravelling a UN-mediated truce agreed in 2022... The next day the group captured Perim Island in the middle of the Bab al-Mandab Strait and gained control over Yemen's west coast, bordering the Red Sea. - [2026-10-02] Axios reported Saudi Arabia and Yemeni government forces were preparing a major counteroffensive specifically aimed at the Bab al-Mandeb coastal areas, with U.S. declining direct military participation for now. Saudi Arabia and Yemeni government forces are planning a major counteroffensive against Iran-backed Houthis in the coming days — an effort to push them away from areas on the Red Sea coast that control the Strait of Bab al-Mandeb... For the second time in recent weeks, the U.S. rebuffed Saudi pleas to join the operation and conduct airstrikes. - [2026-10-04] The counteroffensive formally launched, with its stated primary objective being recapture of Sanaa, while regaining the Bab al-Mandeb Strait was also named a key objective; tens of thousands of government troops with Saudi air cover are involved, but no direct U.S. combat role. Yemeni government forces backed by Saudi Arabia launched a counteroffensive against the Houthis on Sunday in an effort to win back territory... One of the key objectives of the operation is to regain control over the Bab al-Mandeb Strait... Tens of thousands of ground troops loyal to the Yemeni government are participating... The goal is to retake the Yemeni capital of Sanaa, which has been under Houthi control for several years. - [2026-10-05] Initial counteroffensive gains were reported in Dhubab district overlooking Bab el-Mandeb (mainland coast, not Perim island itself), with government forces claiming to take large parts of the district with heavy Saudi air support. The government forces have taken large parts of Dhubab district, which overlooks Bab el-Mandeb, and are asserting full control over the area with heavy air support from a Saudi-led coalition, three military sources and one government source told Reuters. - [2026-10-05] A separate Reuters dispatch confirmed government forces attacking Houthi positions near Bab el-Mandeb and the arrival of elite "Giants Brigades" troops to retake territory in the area, but no report yet of fighting reaching the island itself. Yemeni government forces attacked Houthi positions in the Dhubab district overlooking the strategic Bab el-Mandeb strait on Monday, two military sources said, a day after the internationally recognised government launched a campaign to retake Houthi-held territory. The pro-government's Giants Brigades said its first contingents had arrived in the Bab el-Mandeb area. - [Reference class — analogous rapid reversal] In the 2025–2026 Southern Yemen campaign, a Saudi-backed counteroffensive fully reversed an STC takeover (which had captured ~52% of Yemeni territory including Aden) within about five weeks (2 December 2025 – 9 January 2026). Result | PLC–Saudi victory; Southern Transitional Council dissolves itself on 9 January 2026... On 2 January 2026, the Yemeni government forces, supported by Saudi airstrikes, launched a counteroffensive to retake the territories captured by the STC. This shows Saudi-backed ground campaigns in Yemen can achieve full territorial reversal within roughly a month when airpower and troop numbers are committed, though that case involved a much weaker, less entrenched adversary (STC) than the Houthis. - [Reference class — Hudaydah precedent] A prior, much larger coalition effort to dislodge Houthis from Red Sea coastal territory (the Al-Hudaydah offensive, Dec 2017–Nov 2018) ran 11+ months and still ended in a negotiated ceasefire with Houthi forces retaining effective control, illustrating that Houthi-held coastal/port positions have historically proven very hard to dislodge militarily. Al Hudaydah offensive: Part of the Yemeni Civil War (2014–present) and the Saudi Arabian-led intervention in Yemen | Date | Main Phase: 6 December 2017 – 27 November 2018 (11 months and 3 weeks) - [General base rate] Across the broader 2014–present Houthi–Saudi conflict, territorial control has shifted only gradually and rarely via quick, clean "flips"; most changes (Hudaydah, Marib, southern governorates) took many months to over a year, except for the STC case above and the Houthis' own rapid September 2026 sweep. Saudi-led coalition and the UN-recognized Yemeni government control all of former South Yemen, Marib Governorate, as well as parts of northern Yemeni Governorates of Saada, Al-Jawf, Hajjah, Al Hudaydah, and Taiz. No comparable prior instance was found of an amphibious island recapture happening within weeks of a loss in this conflict. BOTTOM LINE: The base rate for Houthi-held Red Sea coastal/port territory being recaptured quickly is poor historically (Hudaydah took nearly a year and ended in stalemate), but there is a recent counter-example (the STC campaign reversed in ~5 weeks) showing fast reversals are possible when Saudi airpower and large ground forces are fully committed, which is now underway (counteroffensive launched Oct 4-5, 2026) — though current fighting is still confined to the Dhubab mainland district, not the island itself, with ~4 weeks left before the Oct 31 deadline. NOT FOUND: No existing prediction-market, pollster, or expert quantitative forecast specifically estimating the probability/timeline for Perim Island's recapture; no report of fighting having reached Perim Island itself (only the mainland Dhubab district) as of October 5, 2026.

YES means: Perim (Mayyun) Island passes out of primary Houthi military control by October 31, 2026 (11:59 PM ET), with another state, the internationally recognized Yemeni government, or an internationally backed authority establishing actual control there — not merely a raid, bombardment, or announcement. - [2026-10-04/05] Yemen's Presidential Leadership Council head Rashad al-Alimi announced a nationwide counter-offensive, and within one day Saudi-backed "Homeland Shield Forces and the Giants Brigades" claimed to have seized Dhubab district — the mainland headland directly facing Mayyun/Perim across the Small Strait — "cutting off supply lines and roads leading to Bab al-Mandeb." (https://www.aljazeera.com/news/2026/10/5/yemen-forces-claim-to-seize-dhubab-sites-near-bab-al-mandeb-from-houthis) - [2026-10-05] The same push involved the pro-government Southern Giants Brigades — a 15,000–28,000-strong, UAE-trained force with a documented history of amphibious/coastal operations (notably the 2018 Hodeidah coastal campaign) — announcing a "decisive" operation in the Bab el-Mandeb area with its "first contingents" arriving. (https://www.arabtimesonline.com/news/yemeni-forces-seize-dhubab-district-in-offensive-near-bab-el-mandeb/) - [2026-10-05] The Saudi-led coalition reported 100 jets involved and 324 Houthi targets destroyed in the opening days of the offensive, with a separate army spokesman citing 1,122 strikes and 1,747 Houthi fighters killed since the offensive began — indicating a scale of firepower well beyond prior "temporary disruption" actions. (https://www.thenationalnews.com/news/mena/2026/10/05/live-us-iran-war-iraq/; https://www.aljazeera.com/news/2026/10/5/yemen-forces-claim-to-seize-dhubab-sites-near-bab-al-mandeb-from-houthis) - [2026-09-12] Soon after the Houthi capture, an unnamed security analyst cited by Al Jazeera assessed that "the island itself is difficult to defend against an amphibious assault in the long run" , implying Perim is inherently more vulnerable to recapture than mainland positions once a government force reaches the facing coast — which just happened at Dhubab. (https://www.aljazeera.com/news/2026/9/12/iran-backed-houthis-seize-strategic-mayun-island-can-they-hold-it) - [Reference] A near-identical rapid-reversal precedent exists within this same conflict: the Saudi-backed PLC campaign fully reversed the STC's seizure of ~52% of Yemeni territory (including Aden) in about five weeks (Dec 2-Jan 9 2026), showing that fully committed Saudi airpower plus large ground forces can achieve complete territorial reversal within the ~4 weeks remaining before Oct 31. - [2026-10-05] Government/coalition forces are explicitly framing recapture of "the Bab al-Mandeb Strait" as one of the counter-offensive's named key objectives alongside Sanaa, not an afterthought, giving Perim a plausible place on the near-term target list even though no assault on the island itself has yet been reported. - [Geography] Dhubab sits on the coast "north of Mayyun," per Wikipedia's Dhubab entry, meaning the newly captured mainland staging point is the closest possible launch site for any amphibious or boat-borne assault on the island, shortening the logistical runway for a YES-qualifying operation. - [2026-10-05] Pakistani, Saudi and Turkish defence officials met in Riyadh under the Mecca Joint Defence Agreement the same day fighting intensified, raising the possibility of additional regional military or logistical backing (e.g., naval assets) that could support a short-notice amphibious push on Perim. (https://www.aljazeera.com/news/2026/10/5/yemen-forces-claim-to-seize-dhubab-sites-near-bab-al-mandeb-from-houthis) BOTTOM LINE: The strongest YES path is a fast-moving, well-resourced Saudi-backed counter-offensive that has already captured the mainland town directly facing Perim (Dhubab) within 24 hours of launching, using heavy airpower and UAE-trained amphibious-experienced Giants Brigades — the same force posture that reversed the STC's Yemen gains in five weeks — making an opportunistic landing and recapture of the lightly garrisoned, hard-to-defend island plausible before October 31, though no assault specifically on Perim itself has yet been reported. NOT FOUND: Any report of Yemeni government, Saudi, or coalition forces landing on, bombarding, or specifically targeting Perim/Mayyun Island itself since September 11; any official statement naming Perim as an imminent (days-away) objective; any naval/amphibious asset deployment order specific to the island.

YES means: Perim (Mayyun) Island passes out of primary Houthi military control — i.e., the internationally recognized Yemeni government, the Saudi-led coalition, or another internationally backed authority establishes actual, undisputed control of the island itself — on or before October 31, 2026, 11:59 PM ET. - [2026-10-02] Reuters reporting (via Ynetnews) on Saudi Arabia's planned 100,000-troop counteroffensive states the operation, expected to begin in the coming weeks, would be led on the ground by Yemeni forces overseen by Riyadh and backed by Saudi airstrikes, according to six people familiar with the preparations. Crucially, estimates of the launch date range from within a week to after the U.S. midterm elections in early November. If the fuller offensive only starts after the November elections, it cannot possibly retake an island by Oct 31. - [2026-10-02] Even planners are hedging the scope: Saudi officials are considering two main options — one would concentrate the offensive around Bab el-Mandeb, the other would combine that coastal operation with simultaneous attacks in Al-Bayda, Marib, Taiz and Al-Jawf — meaning Perim specifically may not even be the first target chosen, let alone secured within four weeks. - [2026-10-02] A former U.S. ambassador to Saudi Arabia cautioned the operation would likely be narrow and incremental, not a swift vanquishing campaign, implying a slow, phased timeline rather than a rapid island assault by Oct 31. - [2026-10-02] Analysts quoted in the same Reuters piece warn of force-readiness problems: many anti-Houthi forces remain divided and are not fully prepared for a sustained campaign against the Houthis , a structural weakness that predates and persists through the current push. - [2026-10-03] A specialist military outlet (Meta-Defense) notes fighting around Bab el-Mandeb as of Oct 2-3 was still confined to the Kahboub Mountains and Taiz-area high ground overlooking the strait and the island, not the island itself: the Kahboub Mountains overlook routes leading toward the Bab al-Mandab Strait and Perim Island; their lasting occupation would provide favorable defensive positions and means of surveillance over this waterway — i.e., the government side is still fighting for mainland high ground, a precondition stage before any amphibious move on Perim. - [2026-10-03] The same source describes current government-side capability as rudimentary: the fighting primarily relies on light infantry moving on foot or in wheeled vehicles, while both camps employ small drones — a far cry from the specialized naval/amphibious lift needed to retake an island. - [2026-09-10] CNN's exclusive on Perim quoted a former Yemeni defense official warning before the island even fell that dislodging a Houthi garrison there would require "a massive (international) force and the navies" — a threshold not remotely met by the current mainland-focused counteroffensive. - [2026-09-18] A separate analysis (Ethan Chorin/Substack) argued a Saudi-backed rollback was plausible in principle because the island is exposed to bombing and amphibious assault, but as of Oct 5 no such amphibious operation has been reported to have even been attempted, let alone succeeded. - [2026-10-03] Reporting confirms Washington's posture remains supportive but non-combat: the US is providing intelligence and targeting information... though President Trump has rebuffed Saudi requests for direct airstrikes , removing the one actor (the U.S. Navy) most capable of a fast, decisive amphibious/air campaign against an isolated island garrison. - [2026-10-04/05] The newly launched government offensive's own stated primary objective is retaking Sanaa, with Bab el-Mandeb as a secondary objective, and initial gains reported (Dhubab district) are still on the mainland coast opposite Perim, not on the island — confirming the operation has not yet reached, let alone besieged, the island itself. - [Historical precedent] The 2017-2018 Hudaydah coastal offensive, the closest historical analogue for unseating a dug-in Houthi position on the Red Sea coast, took over 11 months and still ended in stalemate rather than clean recapture — underscoring how entrenched coastal/littoral Houthi positions have proven extremely resistant to rapid reversal, in sharp contrast to the one favorable counter-example (the STC campaign) that involved a much weaker non-Houthi adversary. - [Resolution-criteria technicality] The rules explicitly state that if control is "contested, unclear, disputed, or not sufficiently established by the resolution date," the market resolves "No," and that announcements or claims of lost control "will not qualify without actual control being established" — a high bar that even a partial, contested, or ongoing assault on Perim by Oct 31 would fail to clear. BOTTOM LINE: The Saudi-led counteroffensive aimed at Bab el-Mandeb was only announced October 2 and launched October 4-5, with credible reporting that full-scale operations may not even begin until after the US midterms in early November; fighting as of October 5 remains confined to mainland positions (Dhubab, Kahboub mountains) miles from Perim itself, and historical precedent (Hudaydah) shows Houthi-held Red Sea coastal/island positions resist quick recapture — all of which, combined with the resolution criteria's strict "actual control established, not contested" bar, strongly favors a NO outcome by October 31. NOT FOUND: No report of any amphibious landing craft, naval task force, or airborne assault specifically assembled or ordered against Perim Island itself; no confirmed date for when (if at all) the current counteroffensive's "coastal option" would prioritize the island; no official denial or confirmation from the Yemeni government or Saudi coalition naming Perim as a near-term operational target.