Polymarket market

Polymarket European military action against Iran odds

On Polymarket, the busiest line, December 31, is at 4%. The market settles by Dec 31, 2026, and $4K traded in the last 24 hours. Each contract pays $1 if it is right, so 4¢ reads as a 4% chance.

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Polymarket · odds · updated

December 314%
August 310%
July 310%
October 310%
$4K
24h volume on Polymarket
$350K
total volume on Polymarket
1
open of 4 outcomes
Dec 31, 2026
settles

Polymarket odds on every outcome

Polymarket odds on each outcome of European military action against Iran
OutcomeChanceYes price24h volume
December 314%4¢$4KTrade
August 31Final0%0¢$0
July 31Final0%0¢$0
October 31Final0%0¢$0
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Chance is each outcome's Yes price on Polymarket. A Yes contract at 4¢ pays $1 if that outcome wins.

How the odds have moved

Polymarket · December 31
4%▼ 5.2 pts since Nov 8
Yes price
Nov 80% – 14% scaleNov 15

Polymarket's own series for the outcome the headline prices, from where its history starts; one venue, not a blend.

How this market resolves

Polymarket's own settlement wording, in full. This, not the headline, decides who gets paid.

Show the full rules

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.

Scheduled resolution: Dec 31, 2026.

How to trade this market on Polymarket

  1. Check your state first. A few states restrict some contracts.
  2. Open a Polymarket account. Americans trade on Polymarket US. Our Polymarket review covers sign-up and payouts.
  3. Buy Yes or No at the price shown, 4¢ for December 31 right now. Each contract pays $1 if you are right.
  4. Sell any time before it settles, or hold to the result. Polymarket's fees apply to each trade.
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Not on Kalshi here yet: we have not matched this question to a Kalshi market, so there is no second price to compare. Kalshi vs Polymarket compares the two venues.

Common questions

What are the Polymarket odds on European military action against Iran?

On Polymarket, the busiest line, December 31, is at 4%. That is a market-implied probability, not a forecast, and it moves as traders buy and sell.

How does this market resolve?

By Polymarket's own settlement rules for this market. Two venues can word the same question differently and settle differently, so read them before you trade.

Is this question on Kalshi too?

We have not matched it to a Kalshi market yet. When we do, both prices appear side by side here.

Can I trade this market in my state?

In most states, yes, on Polymarket US. A few states have acted against some contracts. Check your state first.

How accurate are Polymarket odds?

Often more accurate than polls, though never certain. A price of 70% should lose three times in ten. How accurate prediction markets are has the research.

What does it cost to trade on Polymarket?

A taker fee on most markets, largest near 50¢, and some categories charge nothing. Polymarket's fees has the detail.