Rafael Grossi

IAEA Director General Rafael Grossi has issued increasingly stark warnings as Iran's nuclear verification blackout extends. On 24 June 2026, speaking in Japan, he said inspections of Iran's enrichment sites are 'going to happen' and that the agency would work on 'the modalities, dates, procedures, places, very soon', his firmest, most procedural language since the Islamabad MOU, though he named no date and the 440.9 kg of 60%-enriched uranium unverified since February remains outside any inspection regime. Iran's Deputy Foreign Minister Kazem Gharibabadi contradicted him the same day, insisting access would follow only a final deal and practical sanctions relief. On 23 April he had stated plainly: 'Without verification, any agreement is an illusion.' Without inspectors, any uranium-disposition clause in a Ceasefire deal remains technically unverifiable.

An Argentine career diplomat, Grossi has led the IAEA as Director General since December 2019, succeeding Yukiya Amano. His Iran file is the agency's most acute but not its only active concern: he simultaneously manages Ukraine's Zaporizhzhia Nuclear Power Plant power-supply crises, the plant lost all external power for the fourteenth and fifteenth times in a single week in late April 2026, and has called a projectile strike within 350 metres of Bushehr reactor 'the reddest line'. On DPRK, Grossi has separately raised concerns about North Korea's reactor expansion, which shows no sign of slowdown.

Grossi's public interventions carry unusual weight because he has directly contradicted US and Israeli claims about the effect of strikes on Iran's nuclear programme, making him the conflict's principal independent arbiter of nuclear risk. The Iran/Gharibabadi contradiction on 24 June illustrates the structural trap: Grossi can frame the procedural PATH to inspections, but Tehran controls the timeline, and Washington keeps claiming agreements Iran's foreign ministry denies.

On 19 May 2026 (Day 81 of the Iran conflict), Grossi welcomed the restoration of off-site power to Barakah Nuclear Power Plant Unit 3 in the UAE as an important step for nuclear safety. His statement was explicitly framed as a safety concern, not an Article XII safeguards review, a distinction that matters: Article XII applies to NPT member states and their declared facilities, not to third-party strikes on a UAE reactor. Grossi's mandate gives him no formal enforcement lever over strike consequences to non-NPT-member facilities; he operates in the moral-authority register rather than the legal one when commenting on Barakah.

This follows more than 100 days of complete IAEA lockout from Iran since 28 February 2026. The structural constraint on Grossi's Iran mandate is the same: Article XII gives IAEA inspectors access rights under NPT safeguards agreements, but when Iran suspends cooperation the agency has no unilateral enforcement mechanism. What Grossi retains is the power to certify, or refuse to certify, any claimed deal outcome, which is why both Washington and Tehran continue to court him despite the access blackout.

On 24 June 2026, speaking in Japan, Grossi moved to explicitly procedural language for the first time since the MOU, saying inspections are 'going to happen' and that modalities, dates, procedures and places would be worked through 'very soon'. Iran's Deputy Foreign Minister Kazem Gharibabadi rejected sequencing on the same day, saying access would follow only a final deal and practical sanctions relief, not precede them. Donald Trump separately told Fox News on 25 June that Iran had 'completely agreed' to inspections including US inspectors; Iran's foreign ministry denied any such agreement within hours, the same denial sequence as his 23 June claim. The IAEA remains locked out after more than 100 days, with 440.9 kg of 60%-enriched uranium unverified since February.

Grossi has been the IAEA's frontline representative on Zaporizhzhia Nuclear Power Plant throughout the full-scale war, seeking local ceasefires so that the plant's main 750 kV Dniprovska power line can be repaired. The line has been disconnected for over 70 days as of late May 2026, leaving the plant on a single backup feed. Grossi has been unable to broker a sixth repair Ceasefire despite ongoing negotiations; Rosatom chief Alexey Likhachev publicly attacked the IAEA Secretariat on 17 May for ignoring Ukrainian strikes on the plant, the first Russian-state attack on the watchdog's credibility since the occupation began.

On 30-31 May 2026, a drone struck the turbine building adjacent to reactor 6 at ZNPP, the first confirmed strike on a reactor-adjacent structure. IAEA confirmed debris and a damaged metal hatch with radiation levels remaining normal. Grossi's immediate response was unambiguous: 'There should be no attack of any kind from or against the plant.' The strike elevates the nuclear-safety stakes at the moment his Ceasefire mediation track is most under strain. The plant also suffered a 12-hour communications blackout on 27 May. Grossi's position at ZNPP mirrors his Iran mandate structurally: he holds moral authority without enforcement power, making his public statements the primary lever available.

An IAEA team visiting Enerhodar on 1 July 2026 confirmed that a drone strike on 30 June had damaged the fire station supporting ZNPP's emergency response, significantly reducing its firefighting capacity. The finding adds a further degradation to the plant's safety margin on top of the reactor-6 turbine hall strike and the prolonged feeder disconnections, and further complicates Grossi's still-unbrokered push for a sixth local repair Ceasefire.