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PolymarketGeopoliticsUpdated 7m ago

Russia military action against an EU country by December 31, 2026?

Market probability
12.5%
−0.5 percentage points
over 24 hours13.0% → 12.5%
95 days until the qualification deadline
Latest eligible start date: December 31, 2026 at 11:59 PM ET
The market can resolve after this date while a qualifying period defined in the rules completes.

A repricing with partial backing — read the new probability with some caution.

The pricing has partial support: healthy trading volume and market depth, a tight spread.

How credible was the move?

Three separate questions — a move can be genuine while the latest price is still settling. Methodology →

Move validity

Is the move backed by real trading and depth?

Moderate

The pricing has partial support: healthy trading volume and market depth, a tight spread.

Consensus stability

Has the market settled at the new probability?

Stable

The probability has held near its current level over the past several hours.

Contract clarity

Will the rules resolve without ambiguity?

High

The resolution rules are relatively specific, with a named source and a defined deadline.

Recent trade activity$15.4K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to "Yes" if Russia takes a qualifying military action against an EU member state between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No".

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to "Yes" if Russia takes a qualifying military action against an EU member state between market creation and the specified date, 11:59 PM ET. 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 Russia, that directly impacts an EU member state. 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. The qualifying military action must be carried out by the armed forces of Russia. Actions carried out by private military contractors, mercenaries, proxy forces, or the armed forces of any other state, including Belarus, will not qualify. An "EU member state" refers to any of the 27 member states of the European Union as of market creation: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, and Sweden. 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; Sabotage, arson, or other covert acts not carried out with the munitions described above; 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 an EU member state do not constitute a military action regardless of any damage incurred. Munitions that enter the territory of an EU member state in the course of a Russian attack on a non-EU country, including Ukraine, will not qualify unless a consensus of information available from the resolution sources indicates that the munition was directed at a target within the EU member state. A strike on an EU member state that is claimed by the Russian government or military will qualify. The territory of an EU member state refers to its terrestrial territory, including its internal waters. Maritime territory and airspace are not encompassed. Territories of member states to which the EU treaties do not apply, including Greenland, the Faroe Islands, and the overseas countries and territories associated with the EU, will not qualify. Where territorial borders are disputed, all territory claimed by and under the de facto control of the EU member state as of market creation will 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 (ET) 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. At the end of the third calendar day, if conflicting reports remain, the incident will be adjudicated 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 Russia and the relevant EU member state, official information from NATO and the European Union, and a consensus of credible reporting.

What could move this market next?

  • The latest eligible start date passesDecember 31, 2026 at 11:59 PM ET

    After this date, no new qualifying period can begin under the rules.

  • Completion of the qualifying period defined in the rules

    Resolution follows once the defined period finishes without a disqualifying event.

Derived from the contract's own mechanics as of Sep 27, 6:38 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±15 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

medium classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
47Medium
Where the price path tends to go next553 observed
  • Choppy / mean-reverting95%
  • Stable consensus3%
  • Thin-liquidity spike1%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~9h
PredictabilityStable

Secondary read: leaning toward Thin market.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Market data

24h volume

$31.1K

Liquidity

$82.6K

Total volume

$91.5K

Category
Geopolitics
Venue
Polymarket
Open interest
—
Spread
1.0 pts
Best bid
12.0%
Best ask
13.0%
7-day range
12.5% – 13.0%
Resolves
Dec 31, 2026
Change (pts)1H0.06H-0.524H-0.57D-0.5

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