# US-Iran ceasefire held through October despite stalled talks

*World. 77% certain. Wednesday, 4 November 2026*

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

**Ceasefire survived October, while a nuclear pact and Hormuz accord remained undone.**

The United States and Iran kept their ceasefire in force through 31 October. By that date, negotiations on a final nuclear deal had not been completed. Senior diplomatic talks and a separate Hormuz agreement also remained unresolved.

The entry noted that hostilities did not resume during the period. This status was logged alongside the assessment of other diplomatic milestones.

No final nuclear agreement was reached by 31 October, as the outcome was entered on Sunday 1 November. The deadline passed without a binding nuclear pact.

No senior diplomatic meeting took place by 31 October, according to the record dated Saturday 31 October. The entry showed that high-level talks were not held. The lack of a meeting left senior dialogue stalled.

No Hormuz agreement was secured by 2 November, as the result was logged on Sunday 1 November. The entry confirmed that the issue remained unsettled. The failure left the Strait of Hormuz dispute unresolved.

## Analysis

By maintaining the lull in hostilities, the United States and Iran kept open a narrow diplomatic channel that could be leveraged for future negotiations, even though senior talks and a nuclear accord remained elusive.

Without a binding framework for nuclear inspections or maritime security, regional actors may remain cautious, and the lack of progress could embolden competing powers to influence the balance of pressure on Tehran and Washington.

Looking ahead, the stalled senior diplomatic engagement suggests that any breakthrough will require renewed confidence-building measures beyond the ceasefire itself. The unresolved status of the Hormuz issue keeps a critical shipping lane vulnerable, while the missing nuclear pact leaves the broader non-proliferation agenda incomplete, leaving policymakers on both sides to navigate a complex set of constraints.

### 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)
- [Iran nuclear deal - Wikipedia](https://en.wikipedia.org/wiki/Iran_nuclear_deal)
- [US sets new demands for Iran deal: What are they? | US-Israel war on Iran News | Al Jazeera](https://www.aljazeera.com/news/2026/10/7/us-sets-new-demands-for-iran-deal-what-are-they)

## What this was built from

- **US x Iran ceasefire continues through October 31?**: Yes, 85%; settles Saturday, 31 October 2026 (polymarket). [Market](https://polymarket.com/event/us-iran-ceasefire-continues-throughptptpt)
- **US-Iran ceasefire continues through the midterms?**: Yes, 77%; settles Wednesday, 4 November 2026 (polymarket). [Market](https://polymarket.com/event/us-iran-ceasefire-continues-through-the-midterms)
- **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, 89%; settles Saturday, 31 October 2026 (polymarket). [Market](https://polymarket.com/event/next-us-iran-senior-diplomatic-meeting-byptptpt)
- **US-Iran Hormuz Agreement by November 2?**: No, 81%; settles Sunday, 1 November 2026 (polymarket). [Market](https://polymarket.com/event/us-iran-hormuz-agreement-byptptpt-20260803235957575)