An IAEA report on Iran's uranium stockpile increase prompted the White House on Saturday to urge its acceptance of a proposal for a U.S.-Iran nuclear deal.
A classified International Atomic Energy Agency report found Iran, since February, produced 300 pounds of uranium enriched to 60%, a step away from weapons-grade.
The International Atomic Energy Agency found Iran has upped its 60%-enriched uranium stockpile from 274.8 kilograms to 408.6 kilograms -- a roughly 50% jump since February.
The report by the Vienna-based International Atomic Energy Agency says that as of May 17, Iran has amassed 408.6 kilograms (900.8 pounds) of uranium enriched up to 60 percent.
Iran lashes out at Austria after a report claims Tehran has an advanced nuclear weapons program, sparking diplomatic tensions and calls for explanations.