# US and Iran failed to reach nuclear deal by end of October

*World. 85% certain. Sunday, 1 November 2026*

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

**No senior meeting took place and the United States did not restore oil sanctions relief.**

By the end of October 2026 the United States and Iran had not concluded a final nuclear agreement. The United States also refrained from reissuing oil sanction relief for Iran. In addition, no senior-level diplomatic meeting between the two governments occurred before the deadline.

Negotiators had been working toward a comprehensive pact that would limit Iran's nuclear activities in exchange for relief measures. The deadline of October 31 passed without a signed document. The absence of a final deal left the nuclear issue unresolved.

Earlier in the year the United States announced the possibility of easing oil sanctions on Iran pending progress in talks. By October 31 the administration had not issued any new relief. Iranian oil exports therefore continued under the existing restrictions.

Talks at the senior level were expected to take place before the end of October, potentially paving the way for further agreements. No such meeting was recorded by the deadline. The lack of a high-level dialogue limited direct communication between the two sides.

## Analysis

The failure to secure a nuclear agreement leaves the core non-proliferation question unsettled, meaning Iran's enrichment program remains subject to existing monitoring arrangements. Without a new deal, regional actors continue to assess the risk of a nuclear breakout, and the United States must decide whether to maintain or adjust its broader strategy toward Tehran.

The absence of renewed oil sanction relief keeps Iranian revenue streams constrained, limiting Tehran's ability to fund its economy and potentially its regional activities. For the United States, retaining the sanctions preserves leverage in future negotiations but also prolongs economic pressure that may influence internal political dynamics within Iran.

This gap may delay any breakthrough in talks and heighten uncertainty about when, if ever, the two sides will reconvene to address outstanding disputes.

### Background consulted for the analysis

- [2025–2026 Iran–United States negotiations - Wikipedia](https://en.wikipedia.org/wiki/2025%E2%80%932026_Iran%E2%80%93United_States_negotiations)
- [Islamabad Memorandum - Wikipedia](https://en.wikipedia.org/wiki/Islamabad_Memorandum)
- [US, Iran talks conclude in Doha, focused on Strait of Hormuz](https://www.reuters.com/world/asia-pacific/us-iran-enter-technical-talks-secure-peace-deal-restart-shipping-2026-07-01/)
- [Iran nuclear deal - Wikipedia](https://en.wikipedia.org/wiki/Iran_nuclear_deal)

## What this was built from

- **US-Iran Final Nuclear Deal by October 31, 2026?**: No, 98%; settles Sunday, 1 November 2026 (polymarket). [Market](https://polymarket.com/event/us-iran-final-nuclear-deal-by-20260621201254412)
- **Next US-Iran senior diplomatic meeting by October 31, 2026? (copy)**: No, 85%; settles Saturday, 31 October 2026 (polymarket). [Market](https://polymarket.com/event/next-us-iran-senior-diplomatic-meeting-byptptpt)
- **US reissues Iran oil sanction relief by October 31?**: No, 92%; settles Sunday, 1 November 2026 (polymarket). [Market](https://polymarket.com/event/us-reissues-iran-oil-sales-sanction-relief-byptptpt-20260708142359046)