Iran dramatically increased its production of a more enriched form of uranium in recent months, U.N. inspectors reported Thursday, suggesting that the country’s nuclear facilities were ramping up their output even as Iran’s leaders engaged in international negotiations on possible curbs to its nuclear program.
At the same time, Iran appeared to have taken steps that would make it harder to use its uranium stockpile to make nuclear bombs, the International Atomic Energy Agency reported.
The mixed picture of Iran’s nuclear progress prompted renewed calls from the Obama administration for a diplomatic resolution to the standoff that has led to oil embargoes, economic sanctions and threats of military strikes.
“The window of opportunity to resolve this diplomatically remains open, but it will not remain open indefinitely,” White House spokesman Jay Carney told reporters after the report was released.
The IAEA report, based on routine monitoring of Iran’s nuclear facilities, documented a sizeable jump in Iran’s stockpile of uranium enriched to 20 percent, a level that can be converted relatively easily to the more-highly enriched uranium needed for weapons. The report said Iran has 255 pounds of uranium enriched at 20 percent, up from 159 pounds in May.
But the IAEA also found that Iran had converted much of the new material to metal form for use in a nuclear research reactor. Once the conversion has taken place, the uranium can’t be further enriched to weapons-grade, Obama administration officials said.
“Production is steadily growing, but it is not as if this material is available for a nuclear weapons ‘break-out,’ “ said a senior official who insisted on anonymity in discussing the administration’s private assessments of the IAEA report.
The IAEA also confirmed that Iran has added more than 1,000 centrifuges to an underground enrichment plant near the city of Qom. However, inspectors discovered that the majority of the new machines were not yet working
Iran insists that the uranium is intended to fuel the country’s sole medical research reactor, although its existing stockpile far exceeds the reactor’s needs for years to come.