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Perim Island no longer under Houthi control by October 31?

polymarketWorld·2026-10-12·view on polymarket ↗
28%
Agent
30%
Market Price
-2.5%
Edge
45%
Confidence
132,880
Volume
0.1c
Spread
19
Days to resolution
5
Markets in event
final rationale
Mean of 2 draws (0.28, 0.27). (0) Not resolved. Since Oct 9, the Saudi envoy, government 'Dawn of Yemen' statements and Giants Brigades footage claim Mayyun was cleared. AFP/CBS military sources say Mayun 'remained in Houthi hands as fighting continued'. Al Jazeera's Sanaa correspondent on Oct 11 listed Dhubab and Bab al-Mandeb as still Houthi-held, and the Houthis deny any loss. Under the rules, contested or unclear control resolves No. (a) About 19 days remain until Oct 31, 11:59 PM ET. (b) If nothing changes, the split between claims persists and the market resolves No. (c) NO: government announcements keep running ahead of reality, as with the walked-back Mocha and Dhubab claims of Oct 5. Fighting around Dhubab airport continues, and Houthi counter-fire keeps the island contested through month-end. (d) YES: the Giants and Nation's Shield forces consolidate Dhubab under heavy coalition air cover and garrison the small island. Reuters, AP or AFP then report Perim as government-held, and the Houthi denials fade. I anchor on Polymarket's 30%, which sits coherently between the Oct 15 market (13%) and the Dec 31 market (53.5%). The research adds nothing decisive beyond what the market reflects. I shade slightly down because the strict contested-means-No wording and the pattern of unverified government claims favour No over a short window.
price vs. prediction
market price agent forecast at t+0
6 follow-ups
re-scan context
This market has been scanned before. Previous predictions:
datepredictedmarket priceconfidence
2026-10-05 11% 8% 59%
1. Planner Opus 5.5 · picks the research tools
Tools chosen: polymarket_direct resolution_source polymarket_related kalshi_related wikipedia gdelt_news
Planner reasoning
This is a Polymarket geopolitical question, so polymarket_direct is the price anchor and resolution_source captures the consensus-reporting standard. Related markets on Houthi territorial control or Yemen offensives give cross-market signals. Wikipedia and GDELT cover the current control status of Perim and any recent military moves.
2. Research parallel tool calls + 4 web research loops (Sonnet 5.5) · read raw by the forecasters
at a glance
RESEARCH DIGEST (built in code: tool summaries and each report's bottom line; the forecasters read the full tool outputs and reports) Tools - polymarket_direct: ## This Market's Polymarket Data **Perim Island no longer under Houthi control by October 31?** - Current price (probability): 30.05% (live; bid 30% / ask 30%) - 7-day price change: +13.50% - 30-day price change: +17.05% - Total volume: $132,880 (USD notional) - Price range: 2.90% - 44.15% - Data points: 26 days - resolution_source: already_resolved=unclear; matches_criteria=True; last_updated=2026-10-12. Credible reporting as of October 10–12, 2026 conflicts on who holds Perim (Mayun) Island. A Saudi envoy, Yemeni government military sources and the government's 'Dawn of Yemen' operation statements say government forces have cleared the Bab el-Mandeb Strait and Mayun Island since October 9. On the other side, the Houthis say - polymarket_related: Polymarket search over 4 keyword(s), kept 11 matches. keyword 'Houthi': 2 markets | keyword 'Yemen': 5 markets | keyword 'Hodeidah': 0 markets | keyword 'Perim': 4 markets - kalshi_related: 0 related markets / summaries. keyword 'Houthi': no matches | keyword 'Yemen': no matches - wikipedia: Fetched 2 Wikipedia entries (0 missing pages). - gdelt_news: GDELT: 30 articles across 3 queries (lookback=30d). 'Perim Island Houthi': 10 hits | 'Mayyun island Yemen forces': 10 hits | 'Bab el-Mandeb island offensive': 10 hits Research loops, bottom lines - current state: Since 2026-10-05, the government, coalition and Saudi officials have claimed Perim has been retaken, with some detail on prisoners and searches on the island. The Houthis deny it, Reuters could not verify the clearance claim, and I found no independent confirmation of established control. Resolution depends on whether credible reporting treats the government claim as settled control, or whether the island is seen as contested or Houthi-held. The Houthis can strike back, and fighting is escalatin - base rate: The Houthis have held Perim since 11 Sept. The only claimed recapture (5 Oct) was walked back and is unverified. Reversing a seizure within about 19 days is rare in Yemen's war, and the contested-means-No rule favours No, although the Saudi air-backed offensive and the island's exposure to amphibious attack leave a tail risk. - yes case: The strongest YES case is that a concrete landing and search operation on Perim was reported on 9 Oct, backed by saturating coalition air cover and a lightning coastal advance. Government and Saudi sources already treat Mayyun as retaken, so only independent confirmation is missing. That requires the Houthis' 10 Oct denial and AFP's "remained in Houthi hands" report to be superseded by clear reporting of government control by Oct 31. - no case: The Perim recapture claim rests on anonymous or partisan sources, and the Houthis deny it. The latest independent-leaning reporting (Al Jazeera, Oct 11) still places Bab al-Mandeb under Houthi control. The rules resolve contested or unclear control as No, so the status quo or an unresolved dispute through Oct 31 resolves No.
tools
toolstatustimeitemssummary
polymarket_direct OK 0.4s 1 ## This Market's Polymarket Data **Perim Island no longer under Houthi control by October 31?** - Current price (probability): 30.05% (live; bid 30% / ask 30%) - 7-day price change: +13.50% - 30-day price change: +17.05% - Total volume: $132,880 (USD notional) - Price range: 2.90% - 44.15% - Data p
resolution_source OK 18.9s 1 already_resolved=unclear; matches_criteria=True; last_updated=2026-10-12. Credible reporting as of October 10–12, 2026 conflicts on who holds Perim (Mayun) Island. A Saudi envoy, Yemeni government military sources and the government's 'Dawn of Yemen' operation statements say government forces have c
polymarket_related OK 0.6s 11 Polymarket search over 4 keyword(s), kept 11 matches. keyword 'Houthi': 2 markets | keyword 'Yemen': 5 markets | keyword 'Hodeidah': 0 markets | keyword 'Perim': 4 markets
kalshi_related OK 0.5s 0 0 related markets / summaries. keyword 'Houthi': no matches | keyword 'Yemen': no matches
wikipedia OK 0.2s 2 Fetched 2 Wikipedia entries (0 missing pages).
gdelt_news OK 139.7s 30 GDELT: 30 articles across 3 queries (lookback=30d). 'Perim Island Houthi': 10 hits | 'Mayyun island Yemen forces': 10 hits | 'Bab el-Mandeb island offensive': 10 hits
research loops · 4/4 ok · 17 searches · 4 page reads
dimensionstatustimesearchespage readsreport
current state OK 20s 5 0 4771 chars
base rate OK 19s 4 0 4554 chars
yes case OK 27s 4 2 6638 chars
no case OK 22s 4 2 4998 chars
report: current state
- [2026-09-11] The Houthis took Perim (Mayun) from Saudi-backed government forces. Reuters and AP cited government sources, and a Houthi official confirmed it. Government forces reportedly withdrew rather than fought. https://www.aljazeera.com/news/2026/9/12/iran-backed-houthis-seize-strategic-mayun-island-can-they-hold-it - [2026-09-12] Analyst Andreas Krieg said the Houthis are well placed to hold the island short term because they control the surrounding coast. He said it would be hard to defend against an amphibious assault in the long run, and that such an assault would be high-risk. https://www.aljazeera.com/news/2026/9/12/iran-backed-houthis-seize-strategic-mayun-island-can-they-hold-it - [2026-09-10] Tareq Saleh told CNN that dislodging the Houthis from Perim would take "a massive (international) force and the navies". https://www.cnn.com/2026/09/10/middleeast/houthis-capture-mocha-red-sea-strait-intl - [2026-10-05] The Saudi-backed government launched a counteroffensive, "Yemen dawn", with coalition air support. The coalition said 100 jets took part and 324 targets were hit. Government officers claimed "full control" of the Bab al-Mandeb strait. Fox, citing Al-Arabiya, quoted the deputy defence minister claiming control of Mayun too. https://www.thenationalnews.com/news/gulf/2026/10/05/yemen-government-forces-claim-bab-al-mandeb-gains-as-saudi-coalition-says-100-jets-join-houthi-offensive/ - [2026-10-07] The PLC said it had captured the Kahbub front near Bab al-Mandab. The Houthis fired missiles at Aden airport. https://en.wikipedia.org/wiki/2026_Yemen_offensives - [2026-10-09] Saudi ambassador Mohammed al-Jaber said remaining Houthi forces had been cleared from Bab al-Mandeb. A Yemeni military source told dpa that Southern Giants forces, with air support, had taken the strait area and Mayun. Giants footage reportedly showed prisoners at Dhubab and searches on the island. Reuters said it could not verify the clearance claim and that Houthis remained in Mocha. https://www.thelevantfiles.org/2026/10/yemens-red-sea-battle-raises-new-alarm.html - [2026-10-09/10] CBS reported a Saudi diplomat saying government forces took the strait and Mayyun Island on Friday, 2026-10-09. https://www.cbsnews.com/live-updates/iran-war-trump-us-elections-saudi-arabia-yemen-houthis/ - [2026-10-10] The Conway Advisors daily update, citing Al-Monitor, said the Southern Giants Brigade and Homeland Shield Forces claimed to have captured Perim and the al-Aradi peninsula. It said a Houthi spokesman denied any loss of territory the same day. https://williamusher.substack.com/p/tanker-attacks-widen-beyond-hormuz - [2026-10-11] Al Jazeera's latest explainer, about Houthi missile strikes on Saudi airports, did not report any confirmed handover of Perim. It said fighting is spreading to Taiz, Marib and al-Jawf, and that the Houthis tightened their siege of Taiz. The Houthis hit Riyadh airport on 2026-10-10, killing 12. Trump says the US "may" join Saudi strikes. https://www.aljazeera.com/news/2026/10/11/yemen-fighting-expands-as-houthis-attack-saudi-airport-what-to-know - [2026-10-05] Turkey, Pakistan and Saudi Arabia agreed to deploy forces to Saudi Arabia under a mutual defence pact. https://www.aljazeera.com/news/2026/10/11/yemen-fighting-expands-as-houthis-attack-saudi-airport-what-to-know - [2026-10-09] The southern separatist council (the STC, reportedly relaunched) is mobilising and has rallies planned for 2026-10-14 in Aden. Giants forces are divided, and southern factions dispute who deserves credit for the gains. No renewed Emirati deployment is confirmed. https://www.thelevantfiles.org/2026/10/yemens-red-sea-battle-raises-new-alarm.html - [2026-10-05] The Wikipedia timeline still recorded the Houthi capture on 2026-09-11. It had no confirmed recapture entry, and it called earlier reports of the Perim capture "unverified claims". https://en.wikipedia.org/wiki/2026_in_Yemen BOTTOM LINE: Since 2026-10-05, the government, coalition and Saudi officials have claimed Perim has been retaken, with some detail on prisoners and searches on the island. The Houthis deny it, Reuters could not verify the clearance claim, and I found no independent confirmation of established control. Resolution depends on whether credible reporting treats the government claim as settled control, or whether the island is seen as contested or Houthi-held. The Houthis can strike back, and fighting is escalating, so the situation could still change before 2026-10-31. NOT FOUND: Independent confirmation (such as AP, Reuters or satellite imagery) that government forces hold Perim. A Houthi statement on Perim beyond the secondhand denial. The original Al-Monitor and dpa articles. Any official handover or administration of the island.
report: base rate
- [2026-09-11/12] The Houthis took Perim (Mayyun) Island after government forces withdrew overnight. Reuters (via Time), AP and Xinhua (via CGTN) all reported it. One official said the Houthis landed "without military resistance". It followed the fall of Mokha on 10–11 Sept and Dhubab. https://time.com/article/2026/09/11/yemen-houthi-red-sea-bab-el-mandeb-shipping-iran-war/ - [2026-09-12] Analysts quoted by Al Jazeera said the island is hard to defend against a long-run amphibious assault, but that assault would be high-risk. Whether the Houthis keep it depends on how hard Saudi-backed forces try to retake it. Government forces were described as poorly coordinated. https://www.aljazeera.com/news/2026/9/12/iran-backed-houthis-seize-strategic-mayun-island-can-they-hold-it - [2026-09-13] Al Jazeera quoted an analyst expecting a protracted, Sudan-like conflict that ends in negotiation, not a quick collapse. https://www.aljazeera.com/news/2026/9/13/fighting-continues-between-yemen-govt-forces-houthis-what-is-the-latest - [2026-09-13] Fox News ran a former Pentagon official's view that the Houthis are in a "kill box" vulnerable to US Navy firepower. This is opinion only. The CGTN/Reuters piece says Washington has limited itself to intelligence and targeting support, with about 100 US advisers in Saudi Arabia. https://www.foxnews.com/world/houthis-enter-us-kill-box-after-seizing-red-sea-cork-former-pentagon-official-warns - [2026-10-05] The government launched "Operation Yemen Dawn" with Saudi air cover (100 jets, 324 targets claimed). It claimed control of the Bab al-Mandeb strait, Dhubab and its airport, and Mokha. The National said these claims could not be independently verified and the Houthis had not confirmed them. The report does not say the island was taken. https://www.thenationalnews.com/news/gulf/2026/10/05/yemen-government-forces-claim-bab-al-mandeb-gains-as-saudi-coalition-says-100-jets-join-houthi-offensive/ - [2026-10-12] Wikipedia's 2026 Yemen offensives page says Yemeni military sources first claimed the Giants Brigades and Homeland Shield completed the capture of Bab al-Mandab, al-Ardi camp and Mayyun Island. It then says later reports found Mayyun and Bab al-Mandab still under Houthi control. On 9 Oct the Houthis claimed Jabal Habashi. This is a secondary source, and the offensive is listed as ongoing. https://en.wikipedia.org/wiki/2026_Yemen_offensives - [2026-10-12] The Jerusalem Post editorial says the government claims to have retaken positions near the strait. It says the Houthis dispute this and the extent of the gains is unclear. It also says the Houthis hold Perim and the government claims to have pushed back. https://jpost.com/opinion/article-911362 - [2026-10-09] The National Interest says the Houthis took Perim on 11 Sept. It also says Perim does not give them full control of the Bab el-Mandeb. https://nationalinterest.org/blog/middle-east-watch/the-houthi-dagger-to-the-red-sea-and-the-world - [2025-12 to 2026-01] Reference class: Saudi-backed government forces retook most of the south (Seiyun, Mukalla, Aden) within about a month in the Southern Yemen campaign. That was a rapid reversal against the STC, a different adversary, and it came after a rapid STC advance. https://en.wikipedia.org/wiki/2025%E2%80%932026_Southern_Yemen_campaign - [2021-11 historical] In the 2018–21 Hodeidah campaign, coalition forces took months to advance along the coast. A coalition withdrawal in Nov 2021 let the Houthis retake ground. Frontline changes in Yemen are usually slow, and amphibious island assaults are rare. https://en.wikipedia.org/wiki/Al_Hudaydah_offensive - [2026-10-12] The question's rules demand actual, established control by a government or backed force. Contested or unclear control resolves No, and claims alone do not count. Perim has been held by the Houthis for about 31 days. The government claim of 5 Oct was walked back. BOTTOM LINE: The Houthis have held Perim since 11 Sept. The only claimed recapture (5 Oct) was walked back and is unverified. Reversing a seizure within about 19 days is rare in Yemen's war, and the contested-means-No rule favours No, although the Saudi air-backed offensive and the island's exposure to amphibious attack leave a tail risk. NOT FOUND: Any live or archived betting odds for this market or related ones; any confirmed post-12 Oct report of a landing on Perim or a government flag raised there; satellite or imagery verification of who holds the island; a statistical base rate for recapturing small islands within a month.
report: yes case
YES means: By 11:59 PM ET on Oct 31, 2026, Houthi primary military control of Perim (Mayyun) Island has ended and government, coalition or other internationally backed forces have clearly established control. Contested or unclear control resolves No. - [2026-10-12] Asharq Al-Awsat (Aden dateline, 7th day of the offensive) describes government forces as consolidating "recaptured areas" around Bab al-Mandab, Mayyun and the Kahbub Mountains. The goal is to stop the Houthis retaking heights over the strait. The report treats Mayyun as already taken, and does not mention any Houthi presence there. It is a government-aligned, Saudi-owned outlet. https://english.aawsat.com/arab-world/5328573-%E2%80%98dawn-yemen%E2%80%99-offensive-intensifies-pressure-houthis-land-and-air - [2026-10-12] The same report gives the scale of the offensive. The armed forces claim over 1,900 precision strikes in 24 hours, 1,150 Houthi fighters "neutralized" and about 12,000 Houthi casualties in six days. These are unverified claims, but the Houthi counter-attacks it describes are aimed at Dhubab Airport, not at Mayyun. https://english.aawsat.com/arab-world/5328573-%E2%80%98dawn-yemen%E2%80%99-offensive-intensifies-pressure-houthis-land-and-air - [2026-10-09] The Giants Brigades released footage of their forces searching "pockets" of Mayyun for remaining Houthis. They also published images of Houthi prisoners taken at Dhubab. The Giants Brigades and Nation's Shield announced "full control" of the strait and island. Yemen Monitor reports that the Saudi ambassador said the area was cleared and that a source told dpa the same. Searching an island for pockets suggests a landing, not just an air claim. https://www.yemenmonitor.com/en/Details/ArtMID/908/ArticleID/184341 - [2026-10-09] Anadolu, via TRT, reported the ground operation to take the strait and Mayun was launched that Friday morning. The Southern Giants and Nation's Shield forces were involved, with coalition support. The ambassador's "cleared" post came the same day. This is a named, resourced amphibious/ground push, not an abstract claim. https://www.trtworld.com/article/fea459b4785b - [2026-10-05/06] The offensive has reversed Houthi gains quickly elsewhere. Reuters, via the Japan Times, reported a "lightning advance" on 5 Oct retaking the coast up to Mocha within a day of the launch. Government sources said the Houthis were retreating into the highlands. Bloomberg, citing AP, said Dhubab (the mainland coast facing Perim) was taken. If Dhubab holds, Perim is isolated from Houthi resupply. Reuters could not verify the extent of the gains. https://www.japantimes.co.jp/news/2026/10/06/world/yemeni-forces-houthis-bab-el-mandeb-strait/ and https://www.bloomberg.com/news/articles/2026-10-05/yemen-says-it-s-retaken-mocha-as-battle-for-bab-el-mandeb-looms - [2026-10-10] A key caveat on the "walk-back". AFP's military sources said the forces were advancing around the strait but had "not yet secured" the waterway. They also said Mayun "remained in Houthi hands as fighting continued", which is a statement about the day, not a verdict. The Houthi politburo member Hizam al-Asad said that "Saudi-led forces" attempted to advance from Ras al-Ara and were repelled "outside" the Bab al-Mandab zone. By his own account the Houthis were defending at the strait's edge, which implies they are under pressure. https://brecorder.com/news/40443566/yemen-govt-forces-say-advancing-against-houthis-around-key-waterway - [2026-10-10] Casualties are roughly balanced and high, at 63 killed in 24 hours per both sides' military sources. This points to sustained contact at the strait, not a quiet front. The coalition said it destroyed more than 130 targets in a "large-scale operation" that day. The Houthi-run Al-Masirah reported strikes on Bab al-Mandab. https://brecorder.com/news/40443566/yemen-govt-forces-say-advancing-against-houthis-around-key-waterway - [2026-10-04] The government explicitly aims to recapture all Houthi-held territory. Reuters reports US intelligence support, and regional and European defensive aid to Riyadh. That means sustained coalition air power is available for the whole of the 19 days to 31 Oct, and Perim's 13 km² size, in open water, makes it exposed to that air power. https://www.defensenews.com/global/mideast-africa/2026/10/04/yemeni-government-launches-offensive-to-seize-all-areas-from-iran-backed-houthis/ - [2025-10-01 precedent] In the 2015 campaign, the Gulf-backed forces "swiftly" took Bab al-Mandab and Perim on 1 Oct, with UAE help. This precedent shows Perim has previously been taken quickly once Gulf-backed forces focused on it. The 2026 force is not comparable: the UAE role is unconfirmed this time. https://gulfnews.com/world/gulf/yemen/hadi-loyalists-regain-control-of-new-district-on-red-sea-1.1597685 - [2026-09-11] The original Houthi takeover happened without a fight. A government official said government forces simply withdrew, and Perim has no confirmed large Houthi garrison. A small garrison with a long supply line across contested water would be vulnerable to a landing. Wikipedia lists the capture as a Houthi gain on 11 Sept. https://news.cgtn.com/news/2026-09-12/Houthis-seize-Perim-Island-tightening-grip-on-Bab-al-Mandab-Strait-1Qn4p1IIpyw/p.html Most likely path to YES: Giants and Nation's Shield troops hold Dhubab and the Bab al-Mandab coast. A small garrison lands on Perim, covered by coalition air power. A named unit hosts a flag-raising or local administration there. Then Reuters, AP or AFP report it as government-held (not "claimed") before 31 Oct. Prerequisites: - Dhubab stays government-held. - Houthi fire on Perim is suppressed. - Media with on-site access, or imagery, confirm the island is held and the Houthis stop denying it. The main risk is that the Houthis' denial, and AFP's "remained in Houthi hands" report, persist into late October. BOTTOM LINE: The strongest YES case is that a concrete landing and search operation on Perim was reported on 9 Oct, backed by saturating coalition air cover and a lightning coastal advance. Government and Saudi sources already treat Mayyun as retaken, so only independent confirmation is missing. That requires the Houthis' 10 Oct denial and AFP's "remained in Houthi hands" report to be superseded by clear reporting of government control by Oct 31. NOT FOUND: Independent (Reuters/AP/AFP) confirmation that government forces hold Perim; imagery of the island; any Houthi acknowledgement of losing it; a report of a named government administrator or flag on the island; the original dpa and Al-Monitor articles; any post-Oct 12 update.
report: no case
YES means: By 2026-10-31, 11:59 PM ET, the Houthis no longer hold primary military control of Perim (Mayyun) Island. Credible reporting must show that another force (the Yemeni government, a backed force or an occupier) has established control. Contested or unclear control resolves No. - [2026-10-11] Al Jazeera's Sanaa correspondent "confirmed" that Mocha, Dhubab district and Bab al-Mandeb remain under Houthi control. This was published two days after the Oct 9 Saudi/government claims of clearing Bab al-Mandeb and Mayyun. Al Jazeera's own explainer says it could not verify the competing claims. Mayyun lies inside the strait, so if the strait's mainland shore is Houthi-held, Perim is hard to call government-held. https://aljazeera.com/news/2026/10/11/taiz-hospitals-near-collapse-as-houthis-tighten-siege-yemen-government - [2026-10-09] The Al-Monitor piece on the Saudi ambassador's claim is paywalled. Its visible text shows the Houthi spokesman Ameen Hayyan flatly denying the loss of Bab al-Mandeb. He also claimed to have repelled a Saudi-backed advance from Lahij toward Bab al-Mandeb, with 22+ armoured vehicles destroyed. The Houthi side is still contesting the ground, which is the "contested" condition the rules resolve as No. https://www.al-monitor.com/originals/2026/10/saudi-envoy-claims-houthis-lost-bab-el-mandeb-what-know - [2026-10-09] Al-Jaber's wording, in his own X post, covered only Bab al-Mandeb, not Mayyun. The Mayyun claim came from an anonymous "military source" to dpa. The claim is therefore anonymous, partisan and secondhand, and it was not an official statement naming Perim. https://www.yemenmonitor.com/en/Details/ArtMID/908/ArticleID/184341 - [2026-10-09] Asharq Al-Awsat, a Saudi-aligned outlet, hedged its own headline: "If the announced control is maintained" the island would mark a turning point. It also said Mayyun was "cleared" while fighting continued in Taiz. Even the friendly press treats the control as unconsolidated. https://english.aawsat.com/arab-world/5327743-operation-%E2%80%98dawn-yemen%E2%80%99-clears-bab-al-mandab-and-its-islands-remaining-houthi - [2026-10-12] Yahoo's compilation of the AP/Saudi-diplomat line carries both the "taken back" claim and a government-military source saying Mayun "remained in Houthi hands as fighting continued". The two accounts conflict. Resolution wording requires no ambiguity. https://yahoo.com/news/world/articles/irans-houthi-allies-step-deadly-110913070.html - [2026-10-05] Reporting on the Oct 5 claims shows the pattern. The government announced Mocha and Dhubab, and the claims were later contradicted. Reuters and AFP said the capture of Mocha was not independently confirmed, with forces only on its outskirts. By Oct 11 Al Jazeera again listed Mocha and Dhubab as Houthi-held. Government "control" announcements have repeatedly run ahead of reality, so the Perim claim may follow suit. https://yournews.com/2026/10/06/7217227/yemen-forces-claim-bab-al-mandab-secured-in-offensive-against-houthis/ - [2026-10-11] Wikipedia's offensive timeline for 10–11 Oct shows fighting still around Dhubab airport and the Wadi al-Dhabab road, plus Houthi counterattacks. Government forces are not consolidated even at the mainland approaches to the strait. Taiz is besieged and At Turbah fell on Oct 4, so the government's logistics are strained. https://en.wikipedia.org/wiki/2026_Yemen_offensives - [2026-10-11] Deadline arithmetic: 19 days remain. A "No" needs only the status quo, a continued split between claims, or a failure to confirm. A "Yes" needs a clear, credible report of government control, with no Houthi denial that major outlets take seriously. The Houthi-held Red Sea coast and the Hanish Islands (per Wikipedia's mid-September status) give the Houthis resupply and counter-fire options on the island. https://en.wikipedia.org/wiki/Bab_al-Mandab_Strait_crisis - [2026-10-12] Mayyun is 13 sq km, and the Houthi garrison reported on the island in mid-September was "not large". It could change hands quickly in either direction. A government landing could be followed by a Houthi missile or boat counter-landing. That fluidity favours "contested" language in reporting through Oct 31. https://www.voiceofemirates.com/en/politics/2026/09/14/the-houthis-have-tightened-their-control-over-the-kahbub-mountains-and-mayyun-island-overlooking-bab-al-mandab/ BOTTOM LINE: The Perim recapture claim rests on anonymous or partisan sources, and the Houthis deny it. The latest independent-leaning reporting (Al Jazeera, Oct 11) still places Bab al-Mandeb under Houthi control. The rules resolve contested or unclear control as No, so the status quo or an unresolved dispute through Oct 31 resolves No. NOT FOUND: Reuters or AP text confirming government control of Perim after Oct 9. Satellite imagery. Any government administrative handover or flag-raising on the island verified by an independent outlet. The full paywalled Al-Monitor text. A Houthi statement naming Perim specifically.
3. Forecasters 2 draws · Opus 5.5 + GPT · plain mean
claude-opus-5-5 · high effort
45% conf
Yes 28%
No 72%
(0) Not resolved. Since Oct 9, the Saudi envoy, government 'Dawn of Yemen' statements and Giants Brigades footage claim Mayyun was cleared. AFP/CBS military sources say Mayun 'remained in Houthi hands as fighting continued'. Al Jazeera's Sanaa correspondent on Oct 11 listed Dhubab and Bab al-Mandeb as still Houthi-held, and the Houthis deny any loss. Under the rules, contested or unclear control resolves No. (a) About 19 days remain until Oct 31, 11:59 PM ET. (b) If nothing changes, the split between claims persists and the market resolves No. (c) NO: government announcements keep running ahead of reality, as with the walked-back Mocha and Dhubab claims of Oct 5. Fighting around Dhubab airport continues, and Houthi counter-fire keeps the island contested through month-end. (d) YES: the Giants and Nation's Shield forces consolidate Dhubab under heavy coalition air cover and garrison the small island. Reuters, AP or AFP then report Perim as government-held, and the Houthi denials fade. I anchor on Polymarket's 30%, which sits coherently between the Oct 15 market (13%) and the Dec 31 market (53.5%). The research adds nothing decisive beyond what the market reflects. I shade slightly down because the strict contested-means-No wording and the pattern of unverified government claims favour No over a short window.
claude-opus-5-5 · high effort
45% conf
Yes 27%
No 73%
(0) The condition is not met yet. Since Oct 9, Saudi envoy al-Jaber and an anonymous Yemeni military source (to dpa) have claimed Mayyun was cleared, and Giants Brigades footage reportedly shows forces searching the island. Against that, the Houthis deny any loss, AFP and CBS military sources said Mayun 'remained in Houthi hands as fighting continued', and Al Jazeera on Oct 11 said Bab al-Mandeb and Dhubab were still Houthi-held. Reuters could not verify the clearance. That is exactly the contested state the rules resolve as No. (a) About 19 days remain until 11:59 PM ET on Oct 31. (b) If nothing changes, the claims stay disputed and the market resolves No. (c) NO scenario: government announcements keep outrunning reality, as they did with the walked-back Oct 5 Mocha and Dhubab claims. Fighting around Dhubab airport and Houthi counterattacks keep the strait contested, and no independent outlet confirms government control by Oct 31. (d) YES scenario: the heavy Saudi air-backed 'Dawn of Yemen' offensive consolidates Dhubab and the strait coast. A garrison on Perim is then verified by AP, Reuters or AFP, or by a flag-raising or imagery, and the Houthi denials lapse before month-end. I anchor on the market's 30%, which sits between the Oct 15 market (13%) and the Nov 30 market (47.5%), and shade slightly lower. The rules put the burden on clear consensus, and the latest independent-leaning reporting (Al Jazeera, Oct 11) leans toward continued Houthi control or a contest. The offensive's momentum and the reported search operation on the island still leave a real path to Yes.
4. Final plain mean of 2 draws
28% (45% confidence)
Yes: 28% No: 72%
Mean of 2 draws (0.28, 0.27). (0) Not resolved. Since Oct 9, the Saudi envoy, government 'Dawn of Yemen' statements and Giants Brigades footage claim Mayyun was cleared. AFP/CBS military sources say Mayun 'remained in Houthi hands as fighting continued'. Al Jazeera's Sanaa correspondent on Oct 11 listed Dhubab and Bab al-Mandeb as still Houthi-held, and the Houthis deny any loss. Under the rules, contested or unclear control resolves No. (a) About 19 days remain until Oct 31, 11:59 PM ET. (b) If nothing changes, the split between claims persists and the market resolves No. (c) NO: government announcements keep running ahead of reality, as with the walked-back Mocha and Dhubab claims of Oct 5. Fighting around Dhubab airport continues, and Houthi counter-fire keeps the island contested through month-end. (d) YES: the Giants and Nation's Shield forces consolidate Dhubab under heavy coalition air cover and garrison the small island. Reuters, AP or AFP then report Perim as government-held, and the Houthi denials fade. I anchor on Polymarket's 30%, which sits coherently between the Oct 15 market (13%) and the Dec 31 market (53.5%). The research adds nothing decisive beyond what the market reflects. I shade slightly down because the strict contested-means-No wording and the pattern of unverified government claims favour No over a short window.
Pipeline Timing
Total pipeline time: 157.2s
Per-tool research timings shown in the Research section above.