The United States is not considering returning to Ukraine the nuclear weapons it gave up after the Soviet Union collapsed, White House national security adviser Jake Sullivan said Sunday.

T he United States is not considering returning to Ukraine the nuclear weapons the country previously agreed to give up under ...

US President Donald Trump dismissed an intelligence assessment by Director of National Intelligence Tulsi Gabbard that Iran ...

Supreme Leader Ayatollah Ali Khamenei rejected a call by US President Donald Trump for Iran's "unconditional surrender" as ...

The military is considering a several options for how to respond if U.S.-Iranian negotiations crumble and they pursue a nuclear weapon.

Chancellor Merz warns Tehran that refusing diplomatic talks could lead to 'complete destruction' of its nuclear program, ...