The Joint Comprehensive Plan of Action — Key Events — Iran–Gulf

What happened

Iran and six external powers agree limits on Iran's nuclear programme in exchange for sanctions relief, endorsed by the Security Council in Resolution 2231.

Everything in the module's nuclear file is downstream of this instrument, including the snapback mechanism that returned United Nations sanctions in 2025 and the verification arrangements whose collapse is now the central unknown.

Confidence: High

When14 Jul 2015

KindDiplomatic · Weapons deliveries · Sanctions

Confidence: High Sources: UN Security Council and Panel of Experts reporting ↗ · Established historical record Methodology Corrections

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Watch questions this event bears on

Standing analytical questions whose evidence runs through this event, each with its latest review. Derived from the Watch object, never restated here.

Diplomatic2026-10-04Has the IAEA regained meaningful verification access?
Unchanged
1. 2026-09-04: Baseline
2. 2026-09-13: Movement observed
3. 2026-09-20: No material change
4. 2026-09-27: No material change
5. 2026-10-04: No material change

Where this fits

This is one entry in the Iran–Gulf timeline. The full Key Events surface carries every dated turning point with its filters and its essential subset, and this event in place shows what came before and after it. How Vigil grades, dates and sources its claims is set out in the methodology.