Who will sign U.S. x Iran deal?

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Market context

Diplomatic negotiations between the United States and Iran have remained stalled since the Trump administration's 2018 withdrawal from the Joint Comprehensive Plan of Action (JCPOA). A new bilateral or multilateral agreement signed by the sitting U.S. president before 31 July 2026 would represent a significant reversal of nearly a decade of escalating sanctions and rhetorical hostility. The market's 19% implied probability reflects the structural difficulty of such a reversal: any deal would require congressional tolerance, Iranian domestic political acceptance, and resolution of disputes over nuclear enrichment, ballistic missiles, and regional proxy activities.

Historical precedent suggests that major U.S.–Iran agreements emerge only during narrow windows of political alignment. The JCPOA itself took over two years of intensive talks under the Obama administration and required buy-in from six world powers. Trump's 2024 re-election campaign rhetoric emphasised "maximum pressure" rather than negotiation, though his first-term approach proved inconsistent—he pursued direct talks with North Korea whilst abandoning the Iran deal. The current 19% reading implies traders assess a low but non-negligible chance that either a crisis (military escalation, nuclear threshold breach) or unexpected diplomatic opening could force rapid negotiation within the settlement window.

Traders should monitor announcements from the U.S. State Department and Iranian foreign ministry for any shift in preconditions, as well as developments in regional tensions affecting both parties' willingness to engage. The agreement need not be signed by government representatives in person—a qualifying deal could be executed through intermediaries or technical channels—which slightly broadens the settlement criteria. The 31 July 2026 deadline allows roughly eighteen months from the market's current date for such a reversal to materialise.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Legal 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

Where can I trade this market with the lowest fees?

On Polymarket Legal 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 Legal 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.

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 Legal UK triggers a quick verification flow that finishes in 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.