By Joyce Lee and Jack Kim SEOUL, Feb 26 (Reuters) - North Korean leader Kim Jong Un said he would focus on expanding his ...

President Trump pressed the Iranian government to reach a deal on its nuclear program as he weighs possible military action ...

Trump says he won't let Iran to build a nuclear weapon, and Iran says it doesn't intend to, but as talks resume, experts see ...

U.S. Secretary of State Marco Rubio warned that Iran's reluctance to discuss its intercontinental ballistic missiles was a "big, big problem." ...

As the Department of Defense pushes for greater AI integration, researchers said the top models chose the nuclear option in ...

Offering “peaceful coexistence or eternal confrontation,” North Korea’s leader said he would only restart talks if the U.S. ends “hostile” policies and accepts Pyongyang’s nuclear status.

Kim Jong Un says North Korea can completely destroy South Korea if it feels threatened, and he refuses to engage with Seoul.

President Donald Trump warned lawmakers and Americans about Iran's "sinister ambitions" for its nuclear program during his ...

PARIS, Feb 26 (Reuters) - France hit back on Thursday over what it called baseless Russian accusations that Ukraine was seeking a nuclear weapon or dirty bomb with help from London or Paris, calling ...

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.