Will US withdraw from NATO by 2027?

Platform comparison

Active sub-markets

Market context

The United States formally initiating withdrawal from NATO or submitting an official notice of denunciation by the end of 2026 is the real-world event underpinning this market, with crowd-implied probability sitting at just 5% for a "Yes" outcome. Historically, no member has ever withdrawn from NATO, and the legal process requires only a one-year notice under Article 13 of the North Atlantic Treaty, yet domestic constraints now complicate unilateral action. In December 2023, the US Congress passed the National Defense Authorization Act, which prohibits the President from withdrawing without a two-thirds Senate majority or congressional approval, creating a significant procedural hurdle despite constitutional ambiguities regarding foreign policy authority[1][2]. While President Trump has threatened withdrawal, the 2024 law effectively prevents formal denunciation without legislative consensus, suggesting the low probability reflects this structural barrier rather than mere political reluctance[2][4].

Traders should monitor upcoming presidential announcements, Senate committee schedules, and any shifts in congressional rhetoric regarding NATO commitments, as these could signal potential catalysts for withdrawal attempts. Recent reporting highlights that while the law may not legally stop a President from acting unilaterally due to constitutional foreign policy powers, the political and institutional resistance remains formidable[2]. Key dependencies include the timing of the 2026 election cycle and whether any administration prioritises NATO withdrawal as a policy goal, though current indicators suggest such a move remains unlikely before the settlement window closes. The regulatory landscape for prediction markets also influences accessibility: under German GlüStV rules and US CFTC reach, platforms offering "no-KYC up to $1,500" allow broader participation for this specific market, though compliance requirements may vary by jurisdiction and platform policy.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Will US withdraw from NATO by 2027? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.