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60-day window · Down-blending · IAEA

The 2026 Iran Nuclear Deal and the 60-Day Talks

What the 2026 US–Iran deal does on the nuclear question — the 60-day talks toward a final agreement, the on-site down-blending of enriched uranium under IAEA supervision, and the enrichment questions still unresolved.

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Framework
Islamabad MOU
Final-deal window
60 days
Stockpile
~440 kg @ 60%
Method
On-site down-blending
Verifier
IAEA

Last updated: 2026-06-18 · Developing story — figures and status change rapidly; verify against the live sources below.

Key facts

  • The deal is a framework, not a final nuclear agreement: it opens a 60-day window (extendable) to negotiate a final, UN-endorsed deal.
  • Iran reaffirms it will not procure or develop nuclear weapons (point 8) and freezes its program at the status quo pending the final deal (point 9).
  • Its ~440 kg stockpile of 60%-enriched uranium is to be down-blended on-site inside Iran under IAEA supervision — the 'minimum methodology'; the material is not removed from the country.
  • Future enrichment levels and verification are the hardest unresolved issues, left to the final deal.
  • Iran suspended IAEA monitoring on 28 February 2026; restoring inspector access is central, and US officials (CIA's Ratcliffe, acting NSA Rubio) have publicly doubted compliance.

Not to be confused with the 2025 Twelve-Day War (13–24 June 2025), a separate Israel–Iran conflict in which the US Operation Midnight Hammer struck Fordow, Natanz and Isfahan on 22 June 2025. This page covers the distinct 2026 Iran war, which began on 28 February 2026.

What does the 2026 deal do on Iran's nuclear program?

The Islamabad Memorandum is a framework that defers the hardest nuclear questions to a final deal due within 60 days. In it, Iran reaffirms it will not procure or develop nuclear weapons (point 8) and agrees to maintain the status quo of its program pending the final agreement (point 9). The fate of its enriched material is to be settled in the final deal, with the memorandum specifying on-site down-blending under IAEA supervision as the method. This page covers the negotiation and terms; for the physical damage to Fordow, Natanz and Isfahan and the stockpile itself, see Iran's nuclear program.

On-site down-blending: what it means

Rather than shipping Iran's ~440 kg of 60%-enriched uranium out of the country, the deal uses the 'minimum methodology' of down-blending on site — diluting it inside Iran to a far lower enrichment level, under the supervision of IAEA inspectors. Keeping the material in Iran was a key Iranian condition; verifying the dilution is a key US one. The technical details and timeline are to be finalized in the 60-day talks.

What's still unresolved

The memorandum leaves the most contentious issues open: whether and at what level Iran may enrich uranium in future, the scope of monitoring, and the sequencing against sanctions relief. These go to the heart of the decade-long dispute and are why the final deal — not the memorandum — will determine whether Iran's path to a weapon is durably closed.

The IAEA access problem

Iran terminated the IAEA's monitoring access on 28 February 2026, disabling cameras and removing seals. Restoring that access is essential for the down-blending and for any final deal to be verifiable — and is a central reason US intelligence officials, including CIA Director John Ratcliffe and acting National Security Adviser Marco Rubio, have publicly questioned whether Iran will comply. The final deal is to be locked in by a binding UN Security Council resolution (point 14).

Timeline of the 2026 Iran war

  • Jun 2025 — The 'Twelve-Day War' between Israel and Iran (Operation Midnight Hammer) sets the stage for a wider confrontation — a distinct earlier conflict.
  • 28 Feb 2026 — The US (Operation Epic Fury) and Israel (Operation Roaring Lion) launch coordinated airstrikes on Iran's military and nuclear sites; Supreme Leader Ali Khamenei is reported killed in the opening hours and Iran begins blocking the Strait of Hormuz.
  • 9 Mar 2026 — Iran's Assembly of Experts names Mojtaba Khamenei as the new Supreme Leader, per Iranian state media.
  • 21 Mar 2026 — US bunker-buster strikes hit the Natanz nuclear facility; Fordow and Isfahan are also struck.
  • Apr 2026 — A ceasefire pauses the heaviest fighting after roughly two months of strikes.
  • 7–8 Jun 2026 — Iran fires ballistic-missile barrages at Israel; Israel strikes across Iran — the April truce collapses.
  • 9–11 Jun 2026 — US forces strike Iranian air-defense sites; Iran's IRGC attacks US bases across the Gulf (Al Udeid, Ali Al Salem, Al Dhafra, Bahrain) and declares the Strait of Hormuz fully closed.
  • 12 Jun 2026 — US and Iran reach a final agreed text for a ceasefire memorandum after mediation led by Pakistan, with Qatar and Oman.
  • 14–15 Jun 2026 — The 14-point 'Islamabad Memorandum of Understanding' is digitally signed; VP JD Vance announces the signing on 15 June.
  • 17 Jun 2026 — Trump signs a hard copy at Versailles and Iran confirms the electronic signing; the planned 19 June Geneva ceremony is cancelled. A 60-day window opens to negotiate a final, UN-endorsed deal.

Follow the whole Iran war & peace deal

This page is part of our Iran-war coverage cluster. Explore the connected analyses:

Iran–US WarMain war tracker (pillar)US–Iran peace dealThe 14-point Islamabad MOUIran war timelineFeb 28 → present, datedIran's nuclear programStockpile, sites, strikesStrait of HormuzClosure, reopening, oil$300bn reconstruction fundWho pays, conditionsIran sanctions reliefOil, frozen assets, scheduleHezbollah ceasefireThe Lebanon frontAttacks on US basesWhich bases were hitIran's red linesHow they shiftedIran war newsLatest headlinesIran–Israel warThe Israel front

Frequently asked questions

Is there an Iran nuclear deal in 2026?

There is a framework — the Islamabad Memorandum, signed 14–17 June 2026 — in which Iran reaffirms it will not build a nuclear weapon and agrees to down-blend its enriched uranium on-site under IAEA supervision. The detailed nuclear terms are deferred to a final, UN-endorsed deal to be negotiated within 60 days.

What happens to Iran's enriched uranium under the deal?

Iran's ~440 kg stockpile of 60%-enriched uranium is to be down-blended on-site, inside Iran, under IAEA supervision — diluted to a much lower enrichment level rather than removed from the country. The technical details are to be finalized in the 60-day talks.

Will Iran be allowed to enrich uranium?

That is the central unresolved question. The memorandum defers Iran's future enrichment levels and the monitoring regime to the final deal, so whether — and at what level — Iran may enrich is still to be negotiated.

Can the deal be verified?

Verification depends on restoring IAEA access, which Iran suspended on 28 February 2026. US intelligence officials have publicly doubted Iranian compliance, and the final deal is meant to be endorsed by a binding UN Security Council resolution.

Sources & further reading

Primary reporting and analysis used to build this page. Treat all wartime figures as contested estimates and verify against the original source before reuse.

Sources & disclaimer. This is a fast-moving story and figures are contested estimates, not confirmed counts. Reporting is aggregated from outlets and trackers including Reuters, AP, Al Jazeera, Wikipedia, the CFR Global Conflict Tracker, and Google News. Casualty figures, MOU terms and contested claims are attributed inline to a named source and date; always verify against primary reporting before relying on any figure.