US-Iran Final Nuclear Deal by…?

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Market context

On 14 June 2026, US and Iranian officials announced a tentative diplomatic framework in Geneva, committing to a 60-day window to negotiate a final deal on Iran’s nuclear programme, alongside sanctions relief and maritime access. This agreement, which includes a mutual halt to military operations and reopening of the Strait of Hormuz, sets the stage for high-stakes technical talks scheduled to begin in Vienna next week.

Historically, similar US–Iran diplomatic overtures—such as the 2015 JCPOA—have faltered due to deep mistrust, unresolved enrichment limits, and shifting political winds. The current crowd-implied probability of 1% YES reflects consensus that a signed, qualifying instrument is unlikely before August 2026, given unresolved differences on uranium stockpiles and sanctions waivers. However, contrarian value may sit slightly higher if technical negotiators remain in Switzerland to hammer out key nuclear file issues, as mediators suggest is possible.

Traders should monitor upcoming announcements from Oman’s foreign minister, Badr Albusaidi, who confirmed “significant progress” and scheduled technical discussions for next week in Vienna. Key dependencies include whether Iran agrees to downblend its 60% enriched uranium stockpile and whether the US commits to releasing $25 billion of frozen assets contingent on compliance. Recent reporting from Reuters and BBC highlights that while some concessions are proposed, final terms remain undisclosed, and Trump is reportedly contemplating pressure tactics if negotiations stall.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews US-Iran Final Nuclear Deal by…? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Who Will Win — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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?

On Who Will Win, 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.

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.

What does it cost to trade on Who Will Win?

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

Do I need to KYC for this market?

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