Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
86% | 14% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
86% | 14% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 17 | 86% |
| August 25 | 13% |
| August 31 | 12% |
| August 19 | 9% |
| August 20 | 9% |
| August 28 | 9% |
| August 21 | 8% |
| August 22 | 7% |
| August 23 | 7% |
| August 29 | 7% |
| August 18 | 6% |
| August 26 | 6% |
| August 30 | 6% |
| August 24 | 5% |
| August 27 | 5% |
| August 16 | 2% |
| August 2 | 0% |
| August 3 | 0% |
| August 4 | 0% |
| August 5 | 0% |
| August 6 | 0% |
| August 7 | 0% |
| August 8 | 0% |
| August 9 | 0% |
| August 10 | 0% |
| August 11 | 0% |
| August 12 | 0% |
| August 13 | 0% |
| August 14 | 0% |
| August 15 | 0% |
Market context
The market currently prices Iranian direct military strikes against Arab nations through August 2026 at zero probability on Polymarket, with traders holding USDC-backed conditional tokens reflecting negligible conviction in such action materialising. This pricing reflects the settlement criteria's specificity: only air strikes or surface-to-surface missile strikes initiated by Iran and directed at one of twenty-one designated Arab countries qualify, excluding proxy actions, naval operations, or cyber activity.
Iran's pattern of direct strikes against Arab states remains episodic rather than sustained. The January 2020 ballistic missile attack on Iraqi military bases following Qasem Soleimani's assassination represents the most recent unambiguous precedent, though that operation targeted a non-Arab country's facilities. More recently, Iran's April 2024 drone and missile barrage against Israel—whilst significant—fell outside the market's Arab-country scope. Between these episodes, Iran has relied predominantly on proxy militias, particularly in Iraq, Syria, and Yemen, rather than claiming direct responsibility for strikes. This historical reliance on deniability and intermediaries suggests traders assess direct attribution as structurally unlikely.
Catalysts warranting monitoring include escalations in Israeli-Iranian tensions, which could theoretically prompt Iranian retaliation against Arab allies of Israel, and shifts in US policy following the 2024 election cycle. The International Institute for Strategic Studies noted in recent assessments that Iranian decision-making on direct strikes correlates with perceived existential threats rather than routine regional friction. Any significant Israeli military action against Iranian nuclear facilities or Revolutionary Guard Corps leadership would represent the highest-probability trigger, though even such scenarios have historically produced measured responses rather than broad regional campaigns.
Methodology
We track Will Iran target a Arab country on 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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.
UK Frequently Asked Questions
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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