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North Korean leader Kim Jong Un has said an elevated U.S. security partnership with South Korea and Japan poses a grave threat to his country and vowed to further bolster his nuclear weapons program ...

Khamenei’s remarks upend months of signals from Tehran to the United States that it wanted to negotiate over its rapidly ...

Iran’s supreme leader says negotiations “are not intelligent, wise or honorable” after President Trump floated nuclear talks ...

Iran’s supreme leader said Friday that negotiations with America “are not intelligent, wise or honorable” after President ...

Ayatollah Ali Khamenei also suggested that “there should be no negotiations with such a government,” but stopped short of ...

Iran's supreme leader said Friday that negotiations with America “are not intelligent, wise or honorable” after President ...

President Trump’s blueprints to build a space-based missile defense shield could help him push for cuts in atomic weapons arsenals with Russia and other nuclear powers.

Iran is preparing to develop a nuclear weapon within months, according to US intelligence. A top group of Iranian scientists ...

Learn about the Iran Nuclear Deal of 2015, including its implementation, its cancellation, and subsequent actions by Iran as well as the U.S. and the European Union.

A Japanese group of atomic bomb survivors, which won the Nobel Peace Prize last year, will send two of its members to a conference on the UN treaty banning nuclear weapons. Nihon Hidankyo made the ...

The recent inaugural address of President Donald Trump has sparked a heated debate over the origins of a groundbreaking scientific achievement: splitting the atom. Trump's claim that American ...