US-Iran Final Nuclear Deal by…?

Platform comparison

Market context

On 14 June 2026, the United States and Iran announced a memorandum of understanding to halt hostilities and reopen the Strait of Hormuz, yet the pivotal question of Iran’s nuclear programme remains unresolved[1]. This interim accord sets a 60-day window for detailed negotiations toward a final deal, with talks potentially commencing in Geneva as early as Friday[1]. Despite Iran’s reiterated commitment to never pursue a nuclear weapon, this assurance has been offered repeatedly, including under the 2015 Obama-era agreement, which ultimately failed[1].

Historically, comparable cases such as the 2015 Joint Comprehensive Plan of Action demonstrate that interim agreements often stall when core demands—like the destruction of enrichment sites at Fordow, Natanz and Isfahan—are not met[6]. The current 0% crowd-implied probability on the prediction market reflects this divergence: while Polymarket’s June 30 market sits at 100% for “Yes”[4], analysts note the Trump administration’s preconditions, including Iran delivering 400 kg of enriched uranium to the US, remain unfulfilled[6]. Sportsbook lines on related geopolitical outcomes show similar caution, underscoring the gap between short-term optimism and long-term scepticism.

Traders should monitor the scheduled Geneva talks, any announcement on uranium stockpile reductions, and IAEA inspection access to nuclear sites, which began following the interim deal[5]. Recent reports confirm the US and Iran signed an interim peace deal last week, granting IAEA inspectors access to Iran’s nuclear facilities, though details of the 14-point memorandum remain contested[5]. The settlement window ends 2026-08-31, leaving just over two months for a qualifying written instrument to be signed or adopted, a timeline that analysts deem tight given the unresolved nuclear constraints[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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?

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 Best Prediction Markets UK 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.