US-Iran nuclear deal by May 31?

Platform comparison

Market context

Polymarket's conditional tokens on USDC/Polygon currently price a US-Iran nuclear agreement by end-May 2026 at roughly 6%, implying traders assess a formal accord as unlikely within the 18-month window. An official deal would require both nations to publicly announce a mutual agreement on Iranian nuclear research and weapons development—bilateral or multilateral—before the settlement deadline. The market accepts any publicly confirmed accord, regardless of implementation timeline or ratification status.

Historical precedent shapes the baseline scepticism. The 2015 Joint Comprehensive Plan of Action (JCPOA) took roughly two years of intensive negotiation from the interim agreement in November 2013. The Trump administration's 2018 withdrawal and subsequent maximum-pressure sanctions campaign fractured diplomatic channels; the Biden administration's 2021-2022 negotiation attempts stalled over Iranian demands for sanctions relief and US guarantees against future withdrawal. Current US-Iran relations remain adversarial, with no active formal talks reported as of late 2024. Comparable nuclear agreements (North Korea, Libya) typically require years of preliminary confidence-building before framework announcements.

Near-term catalysts centre on US domestic political transitions and Iranian domestic constraints. The 2024 US presidential election outcome shapes Washington's negotiating posture; a change in administration could either restart talks or entrench existing positions. Iranian parliamentary elections in March 2024 and presidential elections in June 2025 affect Tehran's negotiating mandate. Traders should monitor statements from the UN, European intermediaries, and Gulf state actors, as multilateral involvement often precedes bilateral breakthroughs. Any resumption of direct talks or sanctions relief announcements would signal material 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

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.

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.