Will the U.S. invade Iran before 2027?

Platform comparison

Market context

Polymarket’s contract is pricing a **25%** chance that the United States starts a qualifying military offensive in Iran before the 2026 settlement window closes, with settlement in **USDC** on **Polygon** through conditional tokens. The wording matters: the market only resolves **Yes** if the US commences an offensive intended to establish control over *any* part of Iran, so traders are not simply betting on air strikes or naval action, but on a step that looks like an invasion or occupation attempt.

The current price sits in the shadow of this year’s already-escalated conflict. The US began Operation Epic Fury on 28 February 2026, with CENTCOM saying it was striking Iranian targets to dismantle security infrastructure[8][11]. Reuters reported in March that Defence Secretary Pete Hegseth said US objectives had not changed and pointed to strikes on missile launchers, defence industry and naval forces, while also noting discussion of additional troop deployments[7]. That history is important: a live campaign can make further escalation more plausible, but it also shows that Washington has so far framed its goals around air and maritime pressure rather than overt territorial seizure[7][16].

For traders, the key catalysts are official deployment orders, congressional or White House statements on mission scope, and any credible reporting on ground-force planning. Reports in March said the Pentagon was preparing for weeks of restricted ground activity and that discussions had included Kharg Island or other coastal operations, though not a full-scale invasion[9]. More recently, the New York Times said the war had entered a new phase focused on the Strait of Hormuz, with renewed attacks and a naval blockade strategy, suggesting the main near-term risk is expanded maritime pressure rather than a land campaign[6]. In practice, any announcement of Marine, airborne or armoured units moving from strike support into territory-control roles would be the most market-relevant trigger.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Will the U.S. invade Iran before 2027? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Scam?, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

Do I need to KYC for this market?

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

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.