Will Iran target a Arab country on August 24, 2026?
Crossbook compares what two exchanges, Polymarket and Kalshi, charge for the same event, and publishes a permanent scored record of its own forecasts under published rules.
Tracked on one venue, with Crossbook's own call on the record.
Crossbook forecast
- 4.5%against a market price of 8.5% at the timeNO
Logged 20 Aug 2026, 23:28 UTC · Brier 0.0020
- Outside view dominates: even in high-tension years (2019–2024), days on which Iran struck an Arab country's territory were a tiny fraction of all days, and a specific 4-day window with no confirmed imminent casus belli should price far below 10%.
- Inside-view adjustment upward: post-2025 Israel–Iran war environment leaves elevated retaliation/proxy-attack risk and Iran has threatened Gulf states hosting US assets, which is genuine signal justifying a multiple of the raw base rate—but much of that risk historically expresses via proxies (deniable, possibly not 'targeting' under resolution criteria) rather than direct Iranian strikes.
- Market at 8.5% sits roughly double my estimate; with only $259 in 24h volume, the divergence plausibly reflects thin, narrative-driven flow (generic Middle East fear premium) rather than informed positioning, so I weight my independent estimate over the price.
- Time-decay matters: with just 4 days to close and no breaking-news signal of mobilization or ultimatum toward an Arab state, the probability mass for a qualifying event must be squeezed into a very short window, favoring NO.
What would change it: Credible reporting of imminent Iranian strike plans against a specific Arab state (e.g., evacuation of diplomatic staff, Gulf airspace closures, or a formal Iranian threat with a deadline) would sharply raise my estimate.
Settlement source
Context
Polymarket prices this at 1%. No verified equivalent is currently listed on the other venue, so there is no cross venue comparison on this page.
Volume over the last 24 hours is modest, at about $3,125 on the busier venue.
This market has settled. The page is kept as a record of what the market said while the question was open, and of what Crossbook called.
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