Will the U.S. invade Iran before 2027?

Platform comparison

Market context

The question centres on whether the United States will launch a sustained military campaign designed to seize and hold Iranian territory within the next fourteen months. This differs materially from airstrikes or limited strikes on military facilities, which have occurred without full-scale invasion. The resolution criteria specify de facto control over land, meaning occupation rather than punitive strikes.

Historical precedent suggests the threshold for U.S. invasion is exceptionally high in the current era. The 2003 Iraq invasion, despite regional instability and perceived threats, required sustained political consensus and took months to execute. Iran presents a substantially larger military, terrain, and population challenge. No U.S. administration has attempted territorial conquest in the Middle East since Iraq, and the political cost of that campaign continues to shape strategic calculations. The 13% probability reflects genuine but limited tail-risk scenarios: escalation from existing tensions with Iranian proxies, a major attack attributed directly to Iranian state forces, or a regional conflict that expands beyond current containment.

Traders monitoring this market should track announcements from the U.S. Department of Defense, statements from the incoming administration regarding Iran policy, and developments in the Strait of Hormuz. Recent tensions with Iranian proxies in Iraq and Syria provide baseline context, but these have not historically triggered invasion planning. Congressional authorisation for military force would be a critical dependency—any formal AUMF (Authorisation for the Use of Military Force) specific to Iran would substantially shift probabilities. Conditional orders tied to major geopolitical announcements or military repositioning statements offer a programmatic approach to capturing sudden probability shifts.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket App UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket App UK 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.

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, Polymarket App UK triggers a quick verification flow that finishes in minutes.