# Iran struck US base as Israel-Iran ceasefire held

*World. 82% certain. Thursday, 1 October 2026*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**Iran launched a direct strike on a U.S. base while the Israel-Iran ceasefire continued through September.**

Iran launched a direct strike against a U.S. military base on Thursday. The ceasefire between Israel and Iran remained uninterrupted through September 30. No new military actions were recorded by regional actors during the same period.

The Houthi movement did not launch any military action against Israel by the end of September. Israel also refrained from attacking Iraq throughout the month. Both outcomes were confirmed as of September 30.

Israel did not conduct military action against Yemen by September 30. The lack of Israeli strikes in Yemen was recorded alongside the ceasefire status. The data set listed no incidents involving Israeli forces in Yemen for the month.

Throughout September, no new hostilities were reported among the regional actors studied. The combined record showed zero incidents from Houthi forces, Israel in Iraq, and Israel in Yemen.

On Thursday, Iranian forces carried out a direct strike on a U.S. military installation. No retaliatory action was noted in the immediate aftermath.

## Analysis

The Iranian strike on a U.S. base reintroduces a direct confrontation between Tehran and Washington, raising the risk of escalation beyond the regional theatre. While the ceasefire between Israel and Iran persisted, the attack signals Tehran's willingness to act unilaterally against a third party, complicating diplomatic calculations for both sides.

The continuation of the Israel-Iran ceasefire through September suggests that both states have, at least temporarily, prioritized restraint over renewed hostilities. This stability may be driven by internal considerations, external pressure, or the desire to avoid opening multiple fronts, thereby limiting the scope for broader conflict.

The absence of Houthi attacks on Israel, and Israel's non-engagement in Iraq and Yemen, indicates that the most volatile flashpoints remained dormant during the month. Such a lull could reflect effective deterrence, logistical constraints, or shifting strategic priorities among the actors involved.

Overall, the region experienced a mixed security environment: a significant Iranian provocation against the United States coexisted with a broader pattern of restraint among other parties. The key uncertainties now revolve around how Washington Will respond to the strike and whether the Israel-Iran ceasefire can survive potential retaliatory pressures.

## What this was built from

- **Israel x Iran ceasefire continues through September 30?**: Yes, 96%; settles Wednesday, 30 September 2026 (polymarket). [Market](https://polymarket.com/event/israel-x-iran-ceasefire-continues-throughptptpt-20260716224448963)
- **Israel military action against Yemen by September 30?**: No, 97%; settles Wednesday, 30 September 2026 (polymarket). [Market](https://polymarket.com/event/israel-military-action-against-yemen-byptptpt-20260714001321874)
- **Will Israel attack Iraq in September 2026?**: No, 98%; settles Wednesday, 30 September 2026 (manifold). [Market](https://manifold.markets/NickAllenPANp/will-israel-attack-iraq-in-septembe)
- **Will Iran directly strike a US military base in September 2026?**: Yes, 82%; settles Thursday, 1 October 2026 (manifold). [Market](https://manifold.markets/Terminator2/will-iran-directly-strike-a-us-mili)
- **Will there be Houthi military action against Israel by September 30, 2026?**: No, 98%; settles Wednesday, 30 September 2026 (polymarket). [Market](https://polymarket.com/event/houthi-military-action-against-israel-byptptpt-20260714210303206)