UN atomic watchdog chief Rafael Grossi on Wednesday welcomed Iran's "concrete step" on agreeing to cap its stockpile of ...

European powers and the United States have submitted a resolution censuring Iran for its poor cooperation with the UN nuclear ...

Iran has defied international demands to rein in its nuclear program and has increased its stockpile of uranium enriched to ...

Advances in its nuclear program could complicate the president-elect’s efforts to contain Iran.

Iran said it would take a "proportionate" response if Western nations back a resolution against its nuclear program at a ...

Iran has raised the possibility it would stop expanding its stockpile of uranium enriched to a purity of 60 percent — very ...

Iran has defied international demands to rein in its nuclear program and has increased its stockpile of uranium enriched to ...

Tehran reportedly offers to stop expanding high-enriched uranium stockpile during visit by UN nuclear watchdog chief.

Iran has tried in vain to prevent a Western push for a resolution against it at the U.N. nuclear watchdog's board meeting by ...