US x Iran Effective Ceasefire by 2026? (2 week pause)

Platform comparison

Market context

The underlying event is whether the United States and Iran can sustain a continuous 14-day pause in qualifying military action before August 2026, despite a war that began with Operation Epic Fury in February 2026. The crowd-implied probability sits at just 5% for a YES outcome, positioning the ceasefire as the heavy underdog against a backdrop of Trump’s volatile rhetoric and ongoing naval blockades in the Strait of Hormuz.

Historical precedents suggest fragility: a two-week cessation agreed on 8 April 2026 collapsed hours later when Trump posted on Truth Social that “a whole civilization will die tonight,” undermining the deal’s durability [2]. Conversely, a 60-day extension was secured in June 2026 after mediation by Pakistan and Qatar, showing that external pressure can temporarily stabilise hostilities [3]. The current 5% price may undervalue the likelihood of a repeat short-term pause if energy crises or global diplomatic pressure mount, creating a contrarian value spot for traders betting on a temporary lull.

Traders must watch for scheduled announcements from the White House, updates on Geneva negotiations, and any shifts in the US naval blockade enforcement. Recent reports confirm the US has resumed its naval blockade, deploying destroyers across the Arabian Sea to intercept vessels heading to or from Iran [7]. Any official statement on reopening the Strait of Hormuz or progress on Lebanon ceasefire coordination could act as a catalyst for a 14-day pause, as seen in the June agreement [2]. The settlement window ends 31 August 2026, leaving roughly 45 days for a qualifying pause to emerge.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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.

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 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 Who Will Win 2026 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.