US‑Iran Diplomatic & Security Monitor

Key Questions

Who is leading Pakistan's mediation in US-Iran nuclear talks?

Pakistan is intensifying efforts with General Munir in Tehran delivering US messages and Sharif conducting a multi-city shuttle. This pushes for a second round of talks after the failed 'Reykjavik 2.0' in Islamabad.

What happened to Iran's Supreme Leader Khamenei?

Khamenei was killed on March 1 by Israel, guided by US intelligence. This has created a leadership vacuum, elevating Ghalibaf in negotiations.

What was the 'Reykjavik 2.0' in US-Iran talks?

It refers to the failed negotiations in Islamabad between US figures like Vance and Witkoff and Iran's Ghalibaf. The talks stalled, prompting renewed mediation efforts.

What are the main sticking points in the nuclear negotiations?

Iran proposes a 5-year hold on its nuclear program, while Trump insists even a 20-year uranium enrichment moratorium is insufficient. Trump eyes a grand bargain or interim deal with IAEA verification as key.

What role does the IAEA play in potential US-Iran deals?

The UN nuclear chief urges strict IAEA checks in any deal to end the war. Verification is highlighted as critical amid high stakes for escalation.

What proposals have been exchanged on nuclear restrictions?

The US and Iran have traded proposals for suspending Iranian nuclear activities. Discussions include calibrated sanctions relief for regional stability.

How does the Strait of Hormuz factor into the talks?

Iran has offered a proposal for safe passage via the Oman side of Hormuz in US talks. It is also considering a temporary halt to shipments to ease tensions and restart peace talks.

What is the current outlook for US-Iran nuclear talks?

Trump is optimistic about a deal, with momentum building despite no set date. Efforts focus on interim deals as comprehensive peace ambitions scale back amid ongoing war updates.

Pakistan intensifies mediation: Munir in Tehran w/ US messages, Sharif multi-city shuttle pushes round 2 post-failed Vance/Witkoff/Ghalibaf 'Reykjavik 2.0'; Khamenei killed Mar 1 elevates hardline Ghalibaf. Pivot to interim deal over nuclear rifts, $100B frozen oil funds as key chip vs grand bargain; IAEA verification critical amid escalation risks.

Sources (10)
Updated Apr 17, 2026
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