
European military action against Iran by...?
Odds right now: December 31 6%.
How much you could buy or sell before the price moves 2¢, from Polymarket’s live order book.
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Cleus’s own estimate from public information. Not financial advice.
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European military action against Iran by: the story so far
Updated November 10, 2026 at 8:21 AM UTC from live market data.
As of November 10, 2026, Polymarket traders give “Will a European country take military action on Iran by December 31” a 6% chance. The price has briefly spiked to 24% on October 25 but is back near 6%, about where it was on October 11. In the last 24 hours it lost 3 points.
$345K has been traded on this event, $2.5K of it in the last 24 hours, and $5.9K sits in the order books. Among the largest holders of “December 31”, wallets with $25K+ in past Polymarket profits have nearly all of their money on No.
Trading is scheduled to end on December 31, 2026. How it resolves: This market will resolve to “Yes” if any European country takes a qualifying military action against Iran by the specified date, 11:59 PM Central European Summer Time (CEST). Otherwise this market will resolve to “No.” A qualifying military action refers to an air strike or a surface-to-surface missile strike, initiated by any European country, that directly impacts Iran. Rules risk: Resolves on "credible reporting", which leaves room to argue.
Which side the winners are on
The top holders of “December 31”, weighted by what each wallet has made on Polymarket all-time. 4 of them have made $25K+.
When proven winners lean against the price, it’s worth a second look. When they agree with it, the price is probably fair.
Big bets in this market that stand out
Orders of $500+ from the last 30 days, scored for new wallets, first markets, long odds and size. Evidence, not accusations — and never a name.
Nothing unusual in the last few hours — big bets are coming from established wallets at normal odds.
How it actually resolves
The written rules below decide this market — not the headline.
Rules risk: Resolves on "credible reporting", which leaves room to argue; the end date has passed and it is still open; a result has been proposed and is in the challenge window.
Full rules from Polymarket
This market will resolve to “Yes” if any European country takes a qualifying military action against Iran by the specified date, 11:59 PM Central European Summer Time (CEST). Otherwise this market will resolve to “No.” A qualifying military action refers to an air strike or a surface-to-surface missile strike, initiated by any European country, that directly impacts Iran. An air strike includes bombs, air-to-surface missiles, and air-launched drones. A surface-to-surface missile strike includes one-way attack drones and surface-to-surface missiles such as cruise or ballistic missiles. For the purposes of this market, a “European country” is defined as any of the following sovereign states: Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Georgia, Germany, Greece, Hungary, Iceland, Ireland, Italy, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, and Vatican City. The following actions do not constitute a qualifying military action: Munitions destroyed or intercepted before impact; Surface-to-air missile strikes; Small-arms fire; Ground incursions; Cyber operations; Naval gunfire and artillery fire; Howitzers, artillery pieces, mortars, and rocket artillery (e.g. MLRS systems); Minor surface-to-surface strikes, including short range loitering munitions, FPV drones, and ATGM strikes; Any threat, authorization, or announcement of force that has not been executed. Any munition that is intercepted or destroyed before impact does not constitute a qualifying military action. Debris, fragments, or any wreckage from intercepted munitions that land on Iran do not constitute a military action regardless of any damage incurred. “Iran” refers to the territory within the internationally recognized borders of Iran. If the precise location of a strike cannot be clearly attributed to the defined territory, it will not qualify. The occurrence, attribution, and timing of a qualifying military action will be primarily determined based on a consensus of information available from the resolution sources. Where multiple sources conflict regarding the occurrence, attribution, or timing of a relevant military action, this market will remain open until the earlier of: i) the confirmation of the occurrence, attribution, and timing of the action based on a consensus of information available from the resolution sources or ii) 3 full calendar days (CEST) from the date of the first credibly reported evidence of the action. If this period would extend past the end date, this market will remain open to allow for 3 full calendar days to pass. If, at the end of the third calendar day, conflicting reports remain as to the occurrence, attribution, or timing of the action, this market will resolve based on the totality of information available from the resolution sources at that time. No single statement, denial, or presentation of evidence will govern where it is contradicted by the totality of information. The resolution sources for this market will be official information from the governments and militaries of the relevant European country and Iran and credible reporting.
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Questions
What are the odds of European military action against Iran by...?
On Polymarket, December 31 is trading at 6%. Prices update live.
What’s going on with European military action against Iran by...?
As of November 10, 2026, Polymarket traders give “Will a European country take military action on Iran by December 31” a 6% chance. The price has briefly spiked to 24% on October 25 but is back near 6%, about where it was on October 11. In the last 24 hours it lost 3 points.
When does this market end?
It is scheduled to end on December 31, 2026, then settles once the result is confirmed under its rules.
What does Cleus predict?
Cleus has not made a call on this market yet.
Prices from Polymarket’s public data, refreshed every few minutes. Cleus odds are Cleus’s own estimate. Unusual-bet scores are statistical patterns, not findings of wrongdoing. Not financial advice; not affiliated with Polymarket.