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Geopolitics·NATO

Will any country leave NATO by...?

icon for Will any country leave NATO by...?
Geopolitics·NATO

Will any country leave NATO by...?

$1,418,854 Vol.

Dec 31, 2026
Polymarket

$1,418,854 Vol.

Polymarket

December 31, 2026

$400,742 Vol.

3%

This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by June 30, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.US pressure on NATO allies for higher defense spending and greater European responsibility has prompted US troop and capability reductions from the alliance's force model in 2026, including cuts to aircraft, tankers, and other assets, alongside a Pentagon posture review. European members responded by committing to replace most withdrawn capabilities and boosting combined defense outlays by 20% in 2025, with several nations advancing diversification from US systems. At the July 2026 Ankara summit, all 32 members reaffirmed Article 5 commitments, and President Trump stated the US would not withdraw. Legal requirements for US exit, including Senate supermajority approval, remain in place, while no member has initiated formal withdrawal procedures under Article 13. These developments have reinforced alliance cohesion amid ongoing burden-sharing tensions.

This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty.

A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution.

The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.
Volume
$1,418,854
End Date
Jan 1, 2027
Market Opened
Mar 31, 2026, 11:41 AM ET

Resolver

0x65070BE91...
This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by June 30, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.US pressure on NATO allies for higher defense spending and greater European responsibility has prompted US troop and capability reductions from the alliance's force model in 2026, including cuts to aircraft, tankers, and other assets, alongside a Pentagon posture review. European members responded by committing to replace most withdrawn capabilities and boosting combined defense outlays by 20% in 2025, with several nations advancing diversification from US systems. At the July 2026 Ankara summit, all 32 members reaffirmed Article 5 commitments, and President Trump stated the US would not withdraw. Legal requirements for US exit, including Senate supermajority approval, remain in place, while no member has initiated formal withdrawal procedures under Article 13. These developments have reinforced alliance cohesion amid ongoing burden-sharing tensions.

This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty.

A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution.

The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.
Volume
$1,418,854
End Date
Jan 1, 2027
Market Opened
Mar 31, 2026, 11:41 AM ET

Resolver

0x65070BE91...

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Frequently Asked Questions

"Will any country leave NATO by...?" is a prediction market on Polymarket with 3 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "December 31, 2026" at 3%, followed by "December 31, 2025" at 0%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 3¢ implies that the market collectively assigns a 3% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Will any country leave NATO by...?" has generated $1.4 million in total trading volume since the market launched on Feb 13, 2025. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Will any country leave NATO by...?," browse the 3 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

This is a wide-open market. The current leader for "Will any country leave NATO by...?" is "December 31, 2026" at just 3%, with "December 31, 2025" close behind at 0%. With no outcome commanding a strong majority, traders see this as highly uncertain, which can present unique trading opportunities. These odds update in real-time, so bookmark this page to watch how the probabilities evolve.

The resolution rules for "Will any country leave NATO by...?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.