Polymarket

Polymarket Predicts Near Certainty Against US-Iran Permanent Peace by May 31st Deadline

Despite recent reports of a tentative agreement to extend a ceasefire and initiate nuclear talks, the Polymarket for a US-Iran permanent peace deal by May 31, 2026, is trading at a mere 2.45% for 'Yes', signaling strong market skepticism that a lasting accord will be finalized within the narrow time

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— 2 min read

As the May 31, 2026, deadline looms for the Polymarket question, 'US x Iran permanent peace deal by May 31, 2026?', the prediction market is signaling an overwhelming 'No' with current prices at 0.9755 (97.55% probability) against a 'Yes' outcome of just 0.0245 (2.45% probability). This strong conviction comes despite a flurry of diplomatic activity in the final days leading up to the resolution date, highlighting the critical distinction between a temporary de-escalation and a definitive end to military hostilities.

The market, which has seen substantial trading volume exceeding $79 million, is designed to resolve to 'Yes' only if a permanent peace deal is established, explicitly indicating that military hostilities have ended or will permanently cease. Importantly, agreements that are explicitly temporary or do not include a lasting cessation of hostilities, such as a temporary ceasefire extension, will not qualify.

Recent developments indicate that U.S. and Iranian negotiators have reportedly reached a tentative agreement to extend a fragile, three-month-old ceasefire by 60 days and commence new talks on Iran's nuclear program. This proposed memorandum of understanding (MoU) would involve the U.S. gradually lifting its naval blockade and relaxing sanctions, allowing Iran to increase oil sales, while Iran would ensure unimpeded shipping through the Strait of Hormuz and remove naval mines.

However, a significant hurdle remains: U.S. President Donald Trump's final approval of this tentative agreement is still pending. Vice President JD Vance acknowledged progress but stated on May 30 that the U.S. and Iran were 'not there yet' and that Trump's backing was unclear. President Trump himself indicated on May 30 that he would make a 'final determination' following a Situation Room meeting, outlining key demands such as Iran never possessing nuclear weapons and the immediate, unrestricted opening of the Strait of Hormuz.

Iran's official stance has also introduced uncertainty. On May 30, Iran's Foreign Ministry denied that nuclear negotiations were currently taking place, stating their focus was on ending the war. An Iranian negotiator, Mohammed Bagher Ghalibaf, reportedly posted that Iran was gaining 'concessions not through talks, but through missiles,' while semi-official Iranian news agencies have signaled ongoing disagreements and accused the U.S. of 'obstructionism.'

The market's current odds reflect a clear understanding of the Polymarket's strict resolution criteria. While a temporary ceasefire extension and the initiation of further negotiations represent a significant diplomatic step, they do not constitute the 'permanent peace deal' required for a 'Yes' resolution by the May 31st deadline. Earlier in April, optimism saw the 'Yes' odds for a May 31st resolution as high as 60%. However, as the deadline approached and the nature of the discussed agreement became clearer—a framework for future talks rather than a definitive end to hostilities—traders have adjusted their positions dramatically, indicating a strong belief that the specified conditions for a permanent peace deal will not be met by the resolution time.

Sources:

Market data fetched at 2026-05-30 18:16 UTC | Polymarket ID: 1919425

This article is generated by AI for informational purposes only. It does not constitute financial advice. Always do your own research before making any investment decisions. Data sourced from Polymarket and public web sources.

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