
The FRONTLINE Dispatch The Unanswered Questions After Strikes on Iran
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Apr 3, 2026 Sebastian Walker, filmmaker and FRONTLINE correspondent who updated the documentary 'Strike on Iran,' offers on-the-ground reporting and interviews with the IAEA chief. He discusses lost inspector visibility into Iran’s nuclear program. He covers contrasts with earlier IAEA statements, challenges of seizing uranium, negotiation urgencies, leadership uncertainty in Tehran, and regional escalation risks.
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IAEA Lost Visibility Into Iran's Nuclear Program
- Rafael Grossi says the IAEA has lost continuity of knowledge about Iran's nuclear program.
- Grossi warns inspectors haven't had access to key sites long enough to confirm everything remains for peaceful use, limiting independent verification.
Why Grossi Spoke More Cautiously This Time
- Grossi's public tone shifted between interviews because of timing and political sensitivity.
- Sebastian Walker notes Grossi must balance IAEA access to partner intelligence and avoid definitive claims while events rapidly evolve.
Key Nuclear Questions Remain Unanswered
- On the key nuclear questions the IAEA is effectively 'flying blind' in Iran right now.
- Walker says limited permitted access and circumspect IAEA disclosures leave major uncertainties about Iran's capabilities.

