U.S. and Iran Dispute Whether Inspection Commitment Exists Under New Nuclear MOU

The United States and Iran offered directly conflicting accounts this week of what Tehran agreed to regarding international nuclear inspections, injecting new uncertainty into a post-war diplomatic framework that is less than two weeks old. The dispute centers on a memorandum of understanding signed by President Donald Trump and Iranian President Masoud Pezeshkian, which launched a 60-day negotiating window aimed at resolving broader questions about Iran's nuclear program, sanctions relief, and related issues. ^[3][6]

Vice President JD Vance, speaking in Switzerland after the first round of high-level talks, stated that Iran had agreed to allow International Atomic Energy Agency inspectors back into the country and described it as "one of the core parts of the agreement." ^[9][11] He said inspection arrangements could be finalized within days and identified resumed IAEA access as one of four objectives accomplished during the talks. ^[11] The following day, Iranian Foreign Ministry spokesman Esmail Baqaei told reporters in Tehran that no plans existed for the IAEA to inspect nuclear facilities damaged by U.S. and Israeli strikes. ^[12] "We have not had a meeting with the director general of the International Atomic Energy Agency, nor do we have any plans for the agency to inspect Iran's nuclear facilities," Baqaei said at the press conference. ^[12] Trump pushed back on Truth Social, asserting that Iran had "fully and completely agreed to highest level Nuclear inspections," and warned that peace talks would halt if Iran refused. He separately told reporters the inspections would happen but that there was "no rush." ^[12][20] IAEA Director General Rafael Grossi weighed in from Tokyo, asserting that the MOU states "explicitly" that nuclear activities "will be supervised by the IAEA," and that inspections are "going to happen" regardless of the timing. ^[20][21]

The legal and verification stakes are substantial. The MOU's text does not set a specific timeline for renewed IAEA access, providing only that all matters relating to the Iranian enrichment program will be resolved as part of a final deal. ^[3] Iran is a state party to the Nuclear Non-Proliferation Treaty and holds a comprehensive safeguards agreement with the IAEA under INFCIRC/153. Under Article 3 of that agreement, Iran is obligated to cooperate with IAEA inspection requests without conditioning access on external political developments. ^[15] The IAEA's Director General formally notified Tehran of that obligation in February 2026. ^[15] The European Union, addressing the IAEA Board of Governors, reinforced this position, stating that "Iran's implementation of its Safeguards Agreement cannot be suspended under any circumstances" and calling for immediate access to all nuclear facilities. ^[19] Iran's deputy foreign minister, Kazem Gharibabadi, countered that inspection-related issues "will be reviewed and decided only within the framework of a final agreement and as a result of practical action by the other side to end all sanctions." ^[4][5]

The impasse is rooted in the physical damage done to Iran's key enrichment facilities. Israel launched military strikes on Iran in June 2025, and subsequent U.S. and Israeli operations continued into early 2026. ^[6][22] Since those strikes, the IAEA has been barred from visiting any of the affected enrichment sites. ^[22] The agency estimates Iran held 440.9 kilograms of uranium enriched to 60% before the conflict began, a quantity the IAEA calculates would be sufficient for approximately 10 nuclear weapons if further enriched, well above the 3.67% ceiling set under the now-defunct 2015 Joint Comprehensive Plan of Action. ^[21][7] Iran has provided no declarations to the IAEA about how much of that material survived the strikes or where it is now located, and the IAEA formally stated it has "lost continuity of knowledge" over Iran's enriched uranium inventories. ^[19][21] Grossi noted that the prevailing assessment is that the stockpile remains near Iran's Isfahan facility, which was itself a target. ^[21]

The JCPOA precedent looms over the current talks. Under that 2015 accord, negotiated with the P5+1, Iran implemented the IAEA's Additional Protocol, permitting inspection of undeclared sites, and enrichment was capped at 3.67%. Trump withdrew the United States from the JCPOA in 2018. ^[16] Iran subsequently escalated enrichment to 60%, and cooperation with IAEA inspectors progressively eroded. ^[16] The current MOU does not reproduce the JCPOA's Additional Protocol requirement. Policy analysts at the Foundation for Defense of Democracies have argued that any durable agreement must require Iran to ratify the Additional Protocol and implement Modified Code 3.1, which would enable snap inspections and mandate early notification of nuclear construction. ^[18] Neither commitment has been publicly confirmed as part of the current framework.

Technical-level working groups on nuclear affairs and sanctions were established following the Switzerland talks, and a next round is expected in Switzerland early in the coming week, with Pakistan serving as a key mediator. ^[12][2] The structural gap between Washington's public characterization of the inspection commitment and Tehran's explicit denial of it represents the first significant test of whether the MOU will hold long enough to reach a final agreement.