IAEA Director General Rafael Mariano Grossi has confirmed that nuclear inspections in Iran will go ahead, while acknowledging that the Agency still lacks access to facilities struck by U.S. airstrikes — a gap that leaves the most consequential questions about Iran's program unanswered.

The disclosure lands as the inspection file enters a new phase. The IAEA and Iran reached an agreement in September 2025 on resuming inspections at multiple sites, including some that had been bombed, Reuters reported on September 9, 2025. That deal followed weeks of compressed diplomacy — Grossi himself warned on September 8 that "not much time" remained for talks — and represented the first structured re-entry framework after a prolonged rupture in safeguards continuity. Yet by January 2026, the picture had curdled. Grossi told Reuters that the Agency had inspected all sites in Iran that had not been bombed, but that the bombed facilities — almost certainly the most sensitive nodes in Iran's enrichment infrastructure — remained inaccessible. "The standoff cannot go on forever," he said.

The chronology matters. Grossi briefed the UN Security Council on June 20, 2025, on the situation in Iran — a relatively rare step that signaled the Board of Governors' June 12 resolution urging Iranian cooperation had not produced immediate movement. Resolutions of that type carry political weight inside the IAEA system, but they carry no binding enforcement mechanism; their function is to build a formal record and apply collective diplomatic pressure. Iran has historically calibrated its response to such resolutions carefully, offering episodic cooperation while preserving leverage over the most sensitive access points.

The Inspection Gap and What It Means

The bombed sites are not incidental to the assessment problem — they are central to it. Under the NPT safeguards framework and Iran's Additional Protocol commitments (suspended, then partially reinstated over successive diplomatic rounds), the IAEA's job is to provide credible assurance that nuclear material has not been diverted. That assurance depends on continuity of knowledge: if inspectors cannot establish the pre-strike inventory and configuration of a facility, they cannot reconstruct what was there, what was destroyed, and — critically — what may have been moved before or during the strikes.

This is the core technical difficulty Grossi is navigating. The inspections that have resumed give the Agency a partial picture. Partial pictures are not the same as verified assurance. For states and institutions that rely on IAEA findings to calibrate sanctions policy, export controls, or diplomatic posture, the distinction is operationally significant.

Iran's position has been to treat access to bombed sites as a separate track from broader inspection resumption — a sequencing that preserves its negotiating leverage while demonstrating a degree of compliance on less sensitive facilities. The IAEA, for its part, needs to avoid a situation where the resumed inspection regime is used to certify a program it cannot fully see.

Where Things Stand

As of late June 2026, Grossi's public posture is that inspections will proceed and that modalities are being worked through — language that suggests ongoing negotiation rather than a settled implementation plan. The January 2026 Reuters reporting established that the unbombed-site inspections are complete; what remains is access to the struck facilities and, presumably, a methodology for assessing a physically altered or destroyed site — something for which IAEA verification doctrine has limited precedent.

The Board of Governors will watch whether the current round of talks produces concrete access timelines. The June 2025 resolution is on the record; a follow-on finding that Iran remains non-cooperative would strengthen the case for referral back to the Security Council, though the geopolitical appetite for that step among P5 members is uneven at best.

For Iran, the calculus involves more than nuclear policy. The bombed sites represent both a sovereignty grievance and a potential bargaining chip in any broader negotiation over sanctions relief or security guarantees. Full IAEA access would remove that chip from the table. That asymmetry — the Agency needs the access more urgently than Iran needs to grant it, in the short term — has defined the pace of this process throughout.

Grossi's public insistence that the standoff cannot continue indefinitely is a statement of institutional necessity, not a deadline. The IAEA has no coercive tools of its own. What it has is credibility — and the sustained inability to inspect key sites erodes the value of every assessment it publishes on Iran.