Iran's stock of uranium close to weapons grade has jumped since December, two reports by the U.N. nuclear watchdog said on Wednesday.

A report by the United Nations’ nuclear watchdog says Iran has accelerated its production of near weapons-grade uranium as tensions between Tehran and Washington rise after the election of U.S. Presid

Iran has sharply increased its stockpile of a critical raw material for atomic weapons, according to a confidential U.N. report.