The world’s nuclear watchdog has delivered a stark assessment: Iran’s nuclear program, a decades-long endeavor, is remarkably resilient. Its head, Rafael Grossi, stated plainly that military strikes alone cannot dismantle the program, a sobering reality for those considering force as a solution.
Grossi emphasized the sheer scale of Iran’s capabilities. It’s not simply a matter of a few buildings; it’s a deeply entrenched network of facilities, expertise, and infrastructure. Even if targeted, the core components – the enriched uranium and the ability to create more – would remain.
Current assessments indicate that Iran’s enriched uranium stockpile remains largely intact following recent strikes. The majority is believed to be secured within the Isfahan nuclear complex, with smaller quantities at Natanz, suggesting limited success in disrupting the program’s fundamental assets.
A critical factor is the location of Iran’s most sensitive nuclear infrastructure. Much of it is buried deep underground, shielded from the reach of airstrikes. This subterranean network presents an immense challenge to any attempt at complete destruction.
While strikes have damaged above-ground facilities and support systems, they haven’t eliminated the program’s heart. Experts believe the highly enriched uranium is stored in mobile containers, further complicating efforts to locate and neutralize it. The precise location of all the material remains uncertain.
As of mid-2025, Iran possesses approximately 441 kilograms of uranium enriched to 60%. This quantity, if further enriched, is sufficient to fuel multiple nuclear weapons, raising serious proliferation concerns. The final step to weapons-grade material could be achieved within weeks.
Adding to the complexity, a newly disclosed enrichment facility near Isfahan remains uninspected. The International Atomic Energy Agency has not yet been granted access to determine its operational status or whether it contains nuclear material, creating a significant blind spot.
Limited access to certain sites is hindering the agency’s ability to fully monitor Iran’s program. Grossi acknowledged gaps in visibility, relying heavily on imagery to assess conditions where inspections are impossible. This lack of complete oversight underscores the difficulties in verifying compliance.
Grossi’s assessment isn’t a military strategy, but a technical evaluation. He believes a lasting resolution will ultimately require a return to negotiations, acknowledging the limitations of force and the enduring nature of Iran’s nuclear ambitions.
