Israel military action against Lebanon on September 10?
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
- 63.0%against a market price of 77.5% at the timeOpen
Logged 7 Sept 2026, 01:36 UTC
- Israel conducted qualifying strikes on Lebanon on Sept. 4 and Sept. 6, including deadly air strikes in southern towns and Nabatieh-area targets, showing current operational cadence rather than an isolated incident [f1][f2][f3][f5].
- The strikes are embedded in a retaliation cycle: Israel cited Hezbollah drone attacks against IDF troops as justification for Sept. 4 and Sept. 6 strikes, making further tit-for-tat action by Sept. 10 plausible [f2][f4].
- Israel is physically positioned for rapid action, with forces inside a self-declared security zone in southern Lebanon and political statements rejecting withdrawal until Hezbollah is disarmed [f9][f10].
- The June framework and US-Iran MOU have reduced but not stopped strikes, which tempers the probability and argues against near-certainty [f8][f11].
- A possible unapproved 'Grey Line' pullback and post-June decrease in attack frequency are the main de-escalatory signals, but they are not decisive as of Sept. 7 [f11][f12].
- Election-linked incentives to appear tough ahead of October 2026 may modestly raise the risk of continued action, though this is more narrative than direct operational evidence [f13].
What would change it: A confirmed ceasefire implementation, Israeli pullback approval, or two to three consecutive strike-free days before Sept. 10 would substantially lower the estimate.
Context
Polymarket prices this at 85%. 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 thin, at about $175 on the busier venue. It closes in 2 days. Prices this close to resolution move on news rather than on reassessment.
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