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European military action against Iran? — Polymarket Odds

Updated September 24, 2026 · Category: Geopolitics & World · Market end date: December 31, 2026

As of September 24, 2026 at 15:51 UTC, the leading outcome is By December 31 at 7.5%, followed by By October 31 at 3.4%. The market has $326.4K in total volume and $3 in the last 24 hours.

Current odds

OutcomeProbability24h changeVolume
By December 317.5%
$1.8K
By October 313.4%
-0.2 pts$2.2K
By August 31 (settled)0.0%
$163.2K
By July 31 (settled)0.0%
$159.1K

Total volume $326.4K · 24h volume $3 · Liquidity $28.8K. Prices are Polymarket YES-share prices read as probabilities; they are not executable quotes.

30-day price history

0%25%50%75%100%Aug 27Sep 24

By December 31 By October 31 · 30-day price history (12-hour points)

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How this market 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. 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 …

Summary of the market's published rules. The rules on Polymarket control settlement; check them there before relying on any outcome: open this market on Polymarket.

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Frequently asked questions

What are the current Polymarket odds for European military action against Iran?

As of September 24, 2026 at 15:51 UTC, the leading outcome is By December 31 at 7.5%, followed by By October 31 at 3.4%. The market has $326.4K in total volume and $3 in the last 24 hours.

When does the European military action against Iran market end?

The event's listed end date is December 31, 2026. Each outcome settles under the market's written rules, summarised on this page, which can differ from the end-date field.

How are these odds calculated?

They are the displayed prices of each outcome's YES share on Polymarket. A price of 60¢ implies roughly a 60% chance. This page refreshes the numbers twice a day, so they are not live quotes.

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