American Strike Near Isfahan May Have Buried Iran’s Uranium Stockpile Underground

A recent American military strike near Isfahan, Iran’s central industrial hub, appears to have pursued an unconventional objective: burying Tehran’s remaining highly enriched uranium stockpile deep beneath layers of rock and rubble rather than attempting its physical removal.

This assessment comes from Israeli military analyst Ron Ben-Yishai, a decorated correspondent and Israel Prize recipient, who published his analysis this week. His evaluation suggests a calculated shift in American strategy, one that acknowledges both the urgency of the nuclear threat and the practical limitations of conventional military operations.

At the heart of this strategic calculation lies approximately 440 kilograms of uranium enriched to 60 percent purity. This quantity of nuclear material, roughly 970 pounds, represents a threshold concern for Western security planners. Within weeks, this stockpile could theoretically be enriched to weapons-grade levels, potentially yielding sufficient fissile material for up to eleven nuclear devices.

The gravity of this threat has been understood in both Washington and Jerusalem for some time. What has changed is the approach to addressing it.

According to Ben-Yishai’s analysis, diplomatic efforts to resolve the uranium question collapsed in the period preceding recent military action. American envoy Steve Witkoff reportedly received clear signals from Iranian negotiators that Tehran had no intention of relinquishing its enrichment capabilities or surrendering materials it believed could not be taken by force.

This diplomatic impasse appears to have prompted a recalibration of American military planning. Rather than contemplate a prolonged and hazardous ground operation to physically extract the uranium stockpile, American planners apparently opted for a strategy of denial through entombment.

The International Atomic Energy Agency has long maintained that Iran stores its most sensitive nuclear materials in hardened underground facilities, primarily at two locations: Isfahan and Natanz. Both sites were targeted during last year’s twelve-day conflict, which concluded with Operation Midnight Hammer, a coordinated American-led campaign against Iranian nuclear infrastructure.

Recent satellite imagery published by the French newspaper Le Monde shows vehicular activity at tunnel entrances to the Isfahan facility as recently as June 9, suggesting the site remained operational until the most recent strike.

The logic behind an entombment strategy carries a certain cold practicality. A ground operation to secure and remove enriched uranium from fortified underground facilities would require not only penetration of hardened defenses but also specialized handling equipment, radiation protection, and secure transportation under combat conditions. The risks of such an operation, both in terms of casualties and the potential for nuclear material dispersal, would be substantial.

By contrast, collapsing tunnel systems and burying the material under tons of debris achieves the primary strategic objective: rendering the uranium inaccessible for weapons development. While not permanent in an absolute sense, such entombment would require months or years of excavation work to reverse, work that would be easily detectable and potentially subject to further military action.

This approach reflects a pragmatic assessment of what can be achieved through military means in the current strategic environment. It acknowledges that complete elimination of Iran’s nuclear knowledge and capability may be impossible, while focusing on the more achievable goal of denying Tehran access to the physical materials necessary for weapons production.

Whether this strategy proves durable remains to be seen. But it represents a clear evolution in Western thinking about how to address the Iranian nuclear challenge without committing to the kind of extended military occupation that recent history has shown to be both costly and uncertain in outcome.