Will the U.S. invade Iran before 2027?

Platform comparison

Market context

The United States and Israel launched a large-scale joint military offensive against Iran on 28 February 2026, codenamed Operation Epic Fury, which killed Iran’s supreme leader and triggered a three-month war before a ceasefire was agreed in June 2026[1][2]. This market prices the chance of a full US invasion to establish territorial control over any part of Iran before the end of 2026 at 12% YES, reflecting that while major strikes have already occurred, ground occupation remains a distinct escalation not yet realised[1].

Historically, comparable cases such as the 1988 US destruction of Iranian oil platforms in the Strait of Hormuz and the 2003 Iraq invasion show that direct strikes often precede, but do not guarantee, territorial occupation[5]. The 2015 Iran Nuclear Deal and its 2018 withdrawal by the Trump administration further illustrate how diplomatic frameworks have repeatedly collapsed under nuclear and missile concerns, yet none of these episodes resulted in US forces establishing land de facto control inside Iran[3].

Traders should monitor upcoming US–Iran ceasefire extension talks, scheduled for a 60-day window from mid-June 2026, and any US congressional announcements on troop deployments in the region[1]. A key catalyst is whether the US shifts from air and missile strikes to ground operations, a move dependent on intelligence confirming Iran’s ballistic missile programme remains active despite the February offensive[1]. Recent reporting notes that Trump’s stated objectives included regime change and preventing nuclear weapons, but the current ceasefire suggests a pause in offensive momentum[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Will the U.S. invade Iran before 2027? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.