US x Yemen ceasefire continues through October 31?

- [2026-10-04] A Saudi-backed Yemeni government counteroffensive to retake all Houthi-held territory began, escalating Houthi-Saudi conflict in Yemen significantly. Yemeni government forces announced a major operation meant to retake all territory held by the Houthis, including the al-Waziyah district. Source: https://www.cfr.org/global-conflict-tracker/conflict/war-yemen - [2026-10-06 to 10-08] Houthi forces launched repeated missile/drone strikes on multiple Saudi airports (Riyadh's King Khalid, Jazan, Najran, Abha, Aden), killing a cumulative total of at least ~18 people over the week and disrupting international flights; Houthi forces launched strikes against the Abha and King Khalid airports, killing three people and wounding twenty-eight; Houthi forces struck Saudi Arabia's Jazan and Najran airports, injuring three people. Source: https://www.cfr.org/global-conflict-tracker/conflict/war-yemen - [2026-10-10] A Houthi-attributed missile strike on Riyadh's King Khalid International Airport killed at least 12 people (including one American) and wounded over 300, the deadliest Saudi attack in a decade; "We may. We're gonna look at it," Mr. Trump said when asked about the possibility as he left the White House for a campaign rally in Tennessee. "We just found out about the recent attack [on the airport]. So we'll make a decision– we move very quickly." Source: https://www.cbsnews.com/live-updates/iran-war-trump-us-elections-saudi-arabia-yemen-houthis/ - [2026-10-11] As of this morning, Trump has not announced any final decision to strike Yemen; he only said the US "may" join Saudi operations and is "going to take a look," with no military action yet confirmed by CENTCOM. Source: https://www.aninews.in/news/world/us/trump-says-will-make-a-decision-on-joining-saudi-arabia-in-strikes-against-houthis-after-riyadh-airport-attack20261011021018/ - [2026-10-11] The State Department condemned the Houthi attacks and expressed solidarity with Saudi Arabia, but did not announce any US military response; Washington also blamed the Houthis for Saturday's assault, the latest of several on the busy facility in the past week. Source: https://www.nbcnews.com/world/middle-east/saudi-airport-attack-trump-us-join-fight-houthis-rcna602744 - [2026-10-11] Reporting notes Trump had previously resisted pressure to intervene: In September, Saudi Crown Prince Mohammed bin Salman repeatedly sought US military assistance against the Houthis, but Trump ultimately backed away from authorizing strikes despite preparations for an operation, according to the New York Times. Source: https://www.rt.com/news/647035-trump-saudi-strikes-yemen/ - [2026-10-11] US currently provides non-combat support only: Washington has reportedly continued providing Riyadh with intelligence and other non-combat support, but direct US strikes against the Houthis would open another front in the regional conflict. Source: https://www.rt.com/news/647035-trump-saudi-strikes-yemen/ - [2026-10-10] CENTCOM remains active in the broader Iran-war theater (e.g., disabling an Iran-linked tanker in the Gulf of Oman) but no CENTCOM statement has confirmed any strike on Yemeni territory itself. Source: https://www.cbsnews.com/live-updates/iran-war-trump-us-elections-saudi-arabia-yemen-houthis/ - [2026-10-11] The underlying US-Houthi ceasefire dates to May 2025, under which the US halted strikes in exchange for Houthis not targeting US vessels; that truce has formally held even as Houthi attacks on Israel and Saudi Arabia resumed in 2026. A U.S.-Houthi truce has held since May 2025, but Houthi attacks on Israel did not end until October 2025 and resumed during the 2026 U.S.-Israel-Iran conflict. Source: https://www.congress.gov/crs-product/IF12581 - [2026-10-11] Saudi-led coalition itself has escalated independently of the US, claiming destruction of over 100 Houthi military targets: The Saudi-led coalition said Friday that it had launched "large-scale operations" against the group, destroying 136 military targets, according to its spokesman. Source: https://www.rt.com/news/647035-trump-saudi-strikes-yemen/ - [2026-10-11] An American civilian death in the Riyadh airport attack raises direct US political pressure to retaliate, a key factor markets should weigh for the remaining ~3 weeks of the contract window. Source: https://www.cbsnews.com/live-updates/iran-war-trump-us-elections-saudi-arabia-yemen-houthis/ NOT FOUND: No CENTCOM press release, Pentagon statement, or credible report confirming an actual US air/missile strike on Yemeni territory as of October 11, 2026. No announced timeline or date for a possible US decision on joining Saudi strikes. BOTTOM LINE: The US-Yemen ceasefire (in place since May 2025) has not been broken as of October 11, 2026, but the situation is acutely unstable — Trump has publicly said the US "may" join Saudi strikes on the Houthis following a deadly Oct. 10 attack on Riyadh's airport that killed an American, and a decision is reportedly imminent ("we move very quickly"), making a US strike before October 31 a live and rising risk rather than a remote one.

- [2025-05-06] The US-Houthi ceasefire, brokered by Oman, took effect after a 1-month-3-week US bombing campaign (Operation Rough Rider, 15 March–6 May 2025); a ceasefire deal between the United States and the Houthi movement in Yemen—brokered by Oman—took hold, ending the March–May 2025 United States attacks in Yemen, as well as the wider US–UK airstrikes on Yemen since the beginning of the Red Sea crisis. This ceasefire has formally remained the status quo for the US (as opposed to Saudi Arabia/Israel) for roughly 17 months to date. https://en.wikipedia.org/wiki/2025_United_States%E2%80%93Houthi_ceasefire - [Historical reference class] Prior analogous Polymarket contracts ("US strikes Yemen by [date]") created after the May 2025 ceasefire consistently resolved "No" for each successive quarterly deadline (Sept 30 2025, Dec 31 2025, Mar 31 2026), reflecting a persistent base rate that the US did not resume direct strikes despite recurring regional escalations (Houthi-Israel strikes, Houthi-Saudi clashes, Red Sea attacks). https://polymarket.com/event/us-strikes-yemen-by-september-30 - [2026-01-30] The "Next Country US Strikes" market (all 2026, ending Dec 31 2026) resolved with "Somalia" as the actual first country struck by the US, and Yemen resolving "No" as of its early resolution — confirming the US had not struck Yemen directly even amid the escalating Yemen civil war in Jan 2026. https://polymarket.com/event/next-country-us-strikes-785 - [2026-10-10] Despite nearly a year of Houthi attacks on Saudi Arabia, Israel, and shipping, and a near-total collapse of Yemen's internal ceasefire (civil war), the US itself has still not struck Yemen directly: involvement in the Saudi-Yemeni government air campaign to degrade Houthi ballistic missile capabilities would mark the first direct U.S. military action against the group since the conclusion of Operation Rough Rider in May 2025 , according to the Critical Threats Project (AEI). https://www.cnbc.com/2026/10/11/trump-saudi-arabia-iran-houthis.html - [2026-10-10] Base-rate-relevant precedent: Trump has previously resisted direct involvement — Last month, Trump rejected two appeals from Saudi Crown Prince Mohammed bin Salman for US strikes against the Houthis, CNN reported at the time. This shows a recent (within the trading window) pattern of the US declining to cross the line into direct strikes even under pressure. https://edition.cnn.com/2026/10/10/middleeast/riyadh-airport-saudi-houthis-intl - [2026-10-10/11] However, the reference-class pattern of "US resists then eventually strikes" has precedent: the 2024-2025 Houthi Red Sea campaign saw the US launch strikes only after months of attacks and multiple warnings (Jan 2024 strikes followed weeks of Houthi shipping attacks beginning Nov 2023); current rhetoric ("We may. We're going to look at it... We move very quickly") mirrors the lead-up language before past US interventions. https://www.cnbc.com/2026/10/11/trump-saudi-arabia-iran-houthis.html - [2024-01 to 2025-05] Historical base rate when the US *was* engaged in Yemen: strikes were frequent and sustained (e.g., The US military has launched new strikes on Yemen, marking the fourth time in a week that it has illegally bombed the war-torn country in Jan 2024, and a 50-day daily campaign in 2025) — meaning once the US crosses the threshold into "qualifying action," single-strike markets for subsequent short periods have historically resolved Yes at very high rates (near 100%) because campaigns, once started, are sustained rather than one-off. - [2026-10-07] Separately, Yemen's internal war context: Speaking at the United Nations Security Council on Friday, the UN Special Envoy to Yemen, Hans Grundberg, said the country has effectively slid back into "full-scale war". This is a Saudi-Yemeni government vs. Houthi conflict, not a US-Houthi one, and so far has not drawn direct US kinetic action. https://www.aljazeera.com/news/2026/10/10/has-yemen-returned-to-full-scale-war - [No formal poll/forecast found] No specialized expert survey (e.g., Metaculus, Good Judgment) estimate was found specifically on US-Yemen strikes for October 2026; the only quantified "crowd" estimates available are Polymarket's own contract prices, which are excluded per instructions, and the now-resolved "Next Country US Strikes" market, which priced Yemen at under 1% as of its (now historical) resolution in January 2026. BOTTOM LINE: The base rate strongly favors continuation of the "no qualifying US strike" status quo — every comparable dated Polymarket "US strikes Yemen by X" contract since the May 2025 ceasefire has resolved No, and the US has avoided direct strikes even through a full-blown Yemeni civil war and surging Houthi attacks on Saudi Arabia for 17 months — but the reference class also shows that once the US has previously been pushed past this threshold (as in 2024 and early 2025), it enters sustained multi-week campaigns, and Trump's "we may... we move very quickly" rhetoric on Oct 10-11, 2026 is historically the type of statement that has preceded past US escalations within days to weeks. NOT FOUND: No Metaculus, Good Judgment Project, or other non-Polymarket forecaster probability specifically on US-Yemen strikes by Oct 31, 2026; no official US government statement (as of Oct 11, 2026) confirming or denying a final decision on joining Saudi strikes.

YES means: no US air strike or surface-to-surface missile strike directly hits Yemeni territory between now and 2026-10-31 23:59 YST — i.e., the May 2025 US–Houthi ceasefire holds and Washington continues to limit itself to intelligence/targeting support for the Saudi-led campaign rather than conducting its own strikes. - [2026-09-11] When Houthi forces neared the Bab al-Mandeb Strait, MBS called Trump twice urging strikes; Trump declined, and U.S. officials stressed the administration has no plans to intervene directly against the Houthis for now. https://www.axios.com/2026/09/11/houthis-yemen-saudi-trump-mbs-strikes - [2026-09-18] At US-Houthi secret talks in Muscat, the Houthis told the Americans that they intended to continue honoring the ceasefire reached with Washington in 2025 and that they did not intend to attack US vessels , per Reuters reporting relayed by the Jerusalem Post. https://www.jpost.com/middle-east/article-909031 - [2026-09-20/21] Despite CENTCOM commander Adm. Brad Cooper preparing strike options and presenting them to SecDef Hegseth, Trump held consultations with his senior advisers about the possibility of strikes against the Houthis... But Trump ultimately decided to hold off , with officials noting the president is wary of getting pulled into another front of war in the Middle East . https://www.axios.com/2026/09/21/trump-houthis-yemen-saudi-bin-salman - [2026-10-11 (29 days ago report, reflecting mid-Sept)] A separate ABC News account confirms the same restraint pattern: The Trump administration is offering significant intelligence and targeting assistance to Saudi Arabia but does not currently plan on launching direct military attacks against the Houthis , even as the Saudi leader was seeking direct military intervention from the U.S. but... did not indicate it was absolutely critical . https://abcnews.com/Politics/trump-administration-plans-strike-houthis-now-2-us/story?id=136375380 - [2026-10-08] Two days before the deadly Riyadh airport strike, Trump explicitly tied military restraint to electoral timing on the separate-but-linked Iran front: Trump said the U.S. will not attack Iran before the Nov. 3 midterm election, explicitly tying potential military action to Election Day , amid numerous GOP candidates in competitive congressional races trying to distance themselves from Trump, often on the Iran war . https://cnbc.com/2026/10/08/iran-war-trump-midterm-election.html - [2026-10-09] CNN analysis frames Trump as politically trapped, noting he had promised his success would be measured by "the wars we never get into," and that by leaving open the option of a resumption of attacks after the midterms, the president is offering new clarity on how he might finally end a war... that is now in its eighth month — a dynamic that argues against opening a costly new Yemen front before Nov. 3 (within the contract's Oct. 31 window). https://www.cnn.com/2026/10/09/politics/trump-iran-war-midterms - [2026-10-10] Even on the day of the deadly Riyadh strike, Trump's own language remained conditional and non-committal — "We may... We're going to look at it... We move very quickly" — matching the identical hedge-then-decline pattern seen in September, per multiple wire reports. https://tribune.com.pk/story/2634116/trump-says-us-may-join-saudi-strikes-against-houthis-in-yemen - [2026-10-11] Despite the escalation, Washington's actual posture by Oct. 11 is still non-combat support: In September, Saudi Crown Prince Mohammed bin Salman repeatedly sought US military assistance against the Houthis, but Trump ultimately backed away from authorizing strikes despite preparations for an operation... Washington has reportedly continued providing Riyadh with intelligence and other non-combat support, but direct US strikes against the Houthis would open another front in the regional conflict. https://www.rt.com/news/647035-trump-saudi-strikes-yemen/ - [2026-10-11] The Saudi-led coalition itself is already absorbing the escalation independently, reducing the Saudis' need for direct US kinetic involvement and giving Trump an off-ramp to continue "look and decide" rhetoric without acting, consistent with the 136-target coalition operation reported the same week. BOTTOM LINE: The documented pattern since Sept. 11, 2026 is consistent and recent: each time Saudi Arabia has pressed for US strikes (Sept 11, Sept 20-21, Oct 10-11), Trump has stopped short of authorizing them, preferring intelligence/targeting support while citing reluctance to open a new front and election-year political costs; the Houthis have also signaled via back-channel talks (Sept 18) that they intend to keep honoring the US-specific ceasefire, giving Washington a face-saving reason to continue non-strike support through Oct. 31. NOT FOUND: No official CENTCOM, Pentagon or White House statement confirming any actual US strike on Yemeni territory as of Oct 11, 2026; no announced deadline by which Trump must decide on joining Saudi operations.

YES means: no qualifying US military strike (air strike or surface-to-surface missile strike) directly hits Yemeni territory before 11:59 PM YST on 2026-10-31 — i.e., the May 2025 US–Houthi ceasefire continues to hold through the contract window. - [2026-10-11] As of this writing, Trump has only said the US "may" join Saudi strikes and is "going to look at it," explicitly declining to commit to any action or timeline beyond "we move very quickly" — rhetoric, not an order, and no CENTCOM strike has been announced. https://tribune.com.pk/story/2634116/trump-says-us-may-join-saudi-strikes-against-houthis-in-yemen - [2026-10-11] Trump reaffirmed a separate, binding pledge that Trump has promised the U.S. would not attack Iran before the midterm elections, which take place on Nov. 3... we will not be attacking Iran at any time prior to the Midterm Elections to be held in the United States on November 3rd — showing his standing posture through the entire contract window (closing Oct 31) is to avoid opening new fronts ahead of the election, even if that pledge is formally about Iran rather than Yemen. - [2026-09-21] Direct precedent within the trading-relevant period: the commander of U.S. Central Command (CENTCOM), Adm. Brad Cooper, prepared options for airstrikes in Yemen and presented them to Secretary of Defense Hegseth on Saturday... But Trump ultimately decided to hold off — i.e., even with a ready CENTCOM strike package and direct Saudi pressure, Trump has already chosen inaction once in the past month. - [2026-09-21] The reported mechanism for restraint was explicitly tied to Houthi behavior toward the US specifically, not Saudi Arabia: Several days later, U.S. diplomats met with Houthi officials and received assurances that the rebel group has no intention of closing the Bab al-Mandeb Strait... U.S. officials said at the time they wouldn't take military action as long as the Houthis did not interrupt non-Saudi ship traffic in the Red Sea — a narrow, Houthi-controllable trigger that has not yet been crossed. - [2026-09-18] A parallel, still-active US-Houthi bilateral channel independent of the Saudi war was confirmed: secret talks were held over the weekend in Oman between US representatives and senior Houthi officials... the meeting took place at the US Embassy in Muscat with the assistance of the Omani government , during which the Houthis told the Americans that they intended to continue honoring the ceasefire reached with Washington in 2025 and that they did not intend to attack US vessels — giving both sides a direct, recent diplomatic off-ramp distinct from the Saudi-Houthi fight. - [2026-10-10] The Saudi-led coalition is already absorbing the retaliatory burden itself, having destroying 136 military targets (per the colleague bottom-line referencing RT) without US participation, reducing the operational necessity for direct US strikes even amid public pressure. - [2026-10-04] A former senior US Yemen negotiator frames Trump's posture as structurally reluctant: a long-time US envoy who negotiated with the Houthis said "The war with Iran is unresolved, so I can understand why he's not keen to open up another front," underscoring that bandwidth/political-risk constraints, not just Houthi behavior, are holding the US back. - [2026-10-04] Analysis published just before the Riyadh airport escalation characterized Trump's Yemen policy as uniquely restrained relative to his other 2026 actions: President Donald Trump has done a lot this year to live up to the criticism that he is reckless. But in a faceoff with a heavily armed, religiously driven regime that's threatening a critical waterway, he's acting remarkably restrained. - [2026-10-11] US military activity in the theater so far has targeted non-Yemen domains (a Panama-flagged vessel in the Gulf of Oman, Iranian "shadow fleet" tankers) rather than Yemeni soil, per CENTCOM: The U.S. military disabled a Panama-flagged commercial vessel in the Gulf of Oman Saturday by firing on it with a fighter jet, U.S. military's Central Command said... U.S. forces have also destroyed 10 tankers that are believed to be part of a "shadow fleet" — showing continued CENTCOM kinetic activity against Iran-linked targets at sea, but not against Yemeni territory, consistent with the contract's narrow "directly impacts Yemen" trigger. - [2026-10-05] UK Parliament research notes mediation channels remain open even amid the civil-war collapse: The UN special envoy and Oman have continued to mediate. A major planned prisoner swap for July stalled due to the increased tensions. The UN special envoy has previously proposed a roadmap for the country. This would include a temporary ceasefire before a wider negotiated settlement. — indicating institutional diplomatic machinery is still active, giving decision-makers an alternative to kinetic escalation. - [2026-10-10] Domestic political cost of further Middle East entanglement is high and rising right before midterms: the war with Iran remains deeply unpopular at home: 69% of Americans said it had not been worth fighting in an AP-NORC poll from Oct. 1 , a data point that argues against opening a costly new kinetic front against Yemen in the final three weeks before the Nov. 3 election. BOTTOM LINE: Every structural factor favoring the status quo — a documented Sept. 21 instance of Trump overriding a ready CENTCOM strike package, an active parallel US-Houthi diplomatic channel in Muscat, a narrow and so-far-uncrossed Houthi redline (non-Saudi shipping), the Saudis absorbing retaliation themselves, and acute midterm-related political caution — remains intact as of Oct. 11; only Trump's non-binding "we may… we'll see" rhetoric has changed, not policy or action. NOT FOUND: No CENTCOM/DoD statement of an actual decision, no new Yemen-specific redeployment order, and no reporting on the outcome (if any) of the September Oman-Houthi direct talks' current status as of Oct. 11, 2026.