Phoenix 24
Inspections remain the decisive test of the emerging agreement.
Tokyo, June 2026
International Atomic Energy Agency Director General Rafael Grossi said inspectors will return to Iranian nuclear facilities, although the dates, procedures and locations have not yet been determined. His statement followed an interim understanding between Iran and the United States intended to open a 60-day negotiating period on the nuclear program and other unresolved issues. Tehran immediately qualified that interpretation, revealing that access to the most sensitive sites remains one of the principal obstacles to a final settlement.
Grossi maintained that inspections are expected to take place under the framework created by the preliminary agreement. Speaking during a visit to Japan, he explained that the agency would soon begin working with Iranian authorities on the practical arrangements required for its personnel to operate inside the country. The central question, according to his position, is not whether inspections will occur, but when and under what conditions they can be conducted safely and effectively.
Iranian Deputy Foreign Minister Kazem Gharibabadi presented a substantially different interpretation. He said there were no immediate plans to permit inspectors to enter nuclear facilities attacked during previous military operations or to examine the material believed to remain inside them. Tehran argues that access to those locations should depend on the conclusion of a final agreement and the removal of sanctions imposed by the United States.
The contradictory statements expose the fragility of the diplomatic process before substantive negotiations have fully developed. Washington and Tehran appear to agree that the nuclear issue must be addressed, but they continue to describe the obligations contained in the interim arrangement differently. Grossi acknowledged the public dispute while insisting that international verification cannot be postponed indefinitely if the negotiations are expected to produce a credible outcome.
The disagreement is particularly important because the IAEA has lacked regular access to several of Iran’s most sensitive facilities. Inspectors have been unable to establish a complete and continuous account of nuclear material stored at locations damaged during attacks by Israel and the United States. Without physical access, the agency cannot independently confirm the condition of the installations, the amount of uranium still present or whether any material has been transferred.
Iran previously accumulated hundreds of kilograms of uranium enriched to 60 percent purity, a level substantially above what is normally required for civilian nuclear power. The material would still require additional enrichment to reach the concentration generally associated with nuclear weapons, but the technical distance between the two levels is comparatively limited. This has made the stockpile a central concern for the IAEA, Western governments and regional states.
The agency’s immediate objective would be to reestablish what nuclear inspectors call continuity of knowledge. That process involves confirming the location, quantity and condition of declared nuclear material while determining whether monitoring equipment and seals remain reliable. A prolonged absence makes verification progressively more difficult because inspectors must reconstruct activities that occurred while surveillance was interrupted.
The interim understanding reportedly contemplates reducing the enrichment level of part of Iran’s uranium under international supervision. Such a process would require the IAEA to confirm the original inventory, observe the technical operation and verify the final condition of the material. Grossi’s insistence on inspections therefore reflects an operational necessity rather than a symbolic diplomatic demand. No verifiable reduction can be certified without direct access and reliable measurements.
Tehran has repeatedly maintained that its nuclear program serves peaceful purposes and that it does not seek to manufacture atomic weapons. Iranian officials also argue that attacks against safeguarded nuclear installations undermined cooperation with the agency and created legitimate security concerns about the disclosure of sensitive information. Their position connects renewed access not only to sanctions relief but also to guarantees against additional military strikes.
The United States, by contrast, considers extensive inspections essential to ensuring that Iran cannot secretly rebuild or accelerate its enrichment capacity. American officials have portrayed international monitoring as one of the fundamental elements of the developing agreement. The differences between Washington and Tehran suggest that the two sides may have accepted broad principles while postponing the precise obligations most likely to determine whether the arrangement succeeds.
For the IAEA, access must remain independent of the political narratives advanced by either government. Its inspectors are responsible for determining whether nuclear material remains in peaceful use and whether Iran complies with its safeguards commitments. The agency cannot substitute intelligence assessments, satellite imagery or official declarations for direct verification conducted under established international procedures.
The condition of the attacked facilities introduces additional technical and security complications. Inspectors may encounter damaged structures, restricted tunnels, contaminated areas or unstable infrastructure requiring specialized safety assessments. Iran could use those risks to justify delayed or limited access, while the agency may insist that carefully planned inspections remain possible. Negotiations over protective measures could therefore become as contentious as the political debate surrounding the visits.
The inspection dispute also demonstrates how Iran and the United States are negotiating publicly while attempting to preserve incompatible domestic narratives. Washington emphasizes enforceable monitoring and restrictions, whereas Tehran stresses sovereignty, sanctions relief and the absence of unconditional concessions. Each government must present the interim arrangement as a political achievement, increasing the possibility that statements intended for internal audiences will complicate confidential diplomacy.
Grossi’s intervention places the IAEA at the center of that confrontation. The agency cannot negotiate the broader peace settlement, remove sanctions or provide military guarantees, but it must eventually determine whether the nuclear commitments are measurable and credible. Its conclusions will influence the willingness of governments to lift restrictions, release frozen assets and support a longer-term agreement.
The coming discussions over dates, procedures and locations will reveal whether the interim understanding contains sufficient common ground to survive. A limited visit designed merely to demonstrate cooperation would not resolve questions surrounding enriched uranium and damaged facilities. Conversely, unrestricted access before a final political agreement may be considered unacceptable by Tehran.
The emerging settlement will therefore be tested first by verification rather than diplomatic language. Grossi has declared that inspections will happen, while Iran insists that access to key locations remains conditional. Until that contradiction is resolved, the status of the nuclear material and the durability of the wider agreement will remain uncertain.
Hechos que no se doblan. / Facts that do not bend.