U.S. strategists are wrestling with a problem that was largely peripheral to nuclear policy a generation ago: what to do with Iran’s growing inventory of enriched uranium if confrontation intensifies. Analysts at the Center for Strategic and International Studies emphasize that airstrikes alone cannot eliminate a nuclear threat because they do not remove accumulated fissile material or the people and know-how that produced it. As David Albright has observed, uranium enriched to 60 percent puts a state “99 percent of the way” to weapons-grade, drastically shortening the path to a bomb. That shifts the challenge from destroying facilities to confronting the material itself.
For journalists who followed the unraveling of Iraq’s program and the subsequent dispersal of expertise and materials, this line of thought is familiar. In the 1990s and early 2000s proliferation coverage focused on exiled scientists, covert procurement chains, and the stealthy transfer of sensitive capabilities. The notion of physically extracting fissile material — using intelligence, logistics and force — reappears in that era under one storied name: Project Sapphire.
On a frigid November night in 1994, trucks moved nearly 600 kilograms of highly enriched uranium out of eastern Kazakhstan — an amount U.S. officials later said could have produced more than 20 nuclear weapons. The secret operation that secured and removed the material has taken on near-mythic status. But that heroic framing can obscure a crucial fact: Project Sapphire was not a unilateral raid. It flowed from a political context that no longer exists.
In the aftermath of the Soviet collapse, Washington’s central fear was disorder — that weapons and materials might fall into the wrong hands as former Soviet states struggled economically and institutionally. Kazakhstan, newly independent and fragile, had inherited nuclear weapons and fissile stocks. Crucially, Kazakh leaders chose to relinquish those weapons. As President Nursultan Nazarbayev later put it, Kazakhstan “voluntarily renounced the world’s fourth largest nuclear arsenal.” That voluntary decision made Project Sapphire feasible: the uranium was handed over, not seized.
That dynamic is absent in Iran. Tehran’s nuclear program is not an unwanted remnant; it is a conscious, decades-long national enterprise woven into strategic planning. Its facilities are hardened, dispersed and defended, and Iran treats enriched uranium as strategic leverage, not merely a liability. IAEA Director General Rafael Grossi has warned that enrichment at these levels is “almost military.” This material is not loose stockpiles awaiting recovery; it is the center of a deliberate national capability.
In 1994 the U.S. faced dangers of fragmentation and insecurity: unsecured caches, economic collapse and fragile institutions. Project Sapphire addressed those vulnerabilities because the interests of the external actors and the host state aligned. Iran presents the opposite situation: its program is cultivated and protected, and there is no obvious political decision by its leadership to surrender capability.
Still, the appeal of Project Sapphire persists. Western strategists often hope for clean technical remedies — a strike, covert sabotage, or a discreet extraction — to solve nuclear dilemmas. Project Sapphire can be misread to support that hope. In truth, its success was political: based on consent, cooperation and a broader Cooperative Threat Reduction environment. There is no comparable framework today with Iran.
More broadly, Project Sapphire was a product of a short post–Cold War window when cooperation between Washington and former Soviet states was possible and desirable. Kazakhstan’s renunciation reflected a strategic choice to integrate, stabilize and reduce risk. That environment has largely faded. Today’s nuclear landscape is more adversarial and fragmented, and less hospitable to cooperative fixes. The idea that fissile material could be quietly lifted out of a resistant state belongs more to history than to current policy.
Project Sapphire prevented enough uranium from reaching the black market to frustrate dozens of potential weapons and remains a remarkable achievement — a rare convergence of timing, trust and shared interest. But it was an exception, not a replicable template for dealing with a committed nuclear program like Iran’s.
