The United States has not tested a nuclear weapon since 1992.REF However, given the deteriorating security environment, it may need to do so once again.

North Korea has said it will start dismantling its nuclear test site this week, in a ceremony to be attended by foreign journalists. But what would it take for the country to truly "denuclearise"?

North Korea says its latest weapons test was a new hypersonic intermediate-range missile designed to strike targets in the ...

SEOUL--A series of small, natural earthquakes has struck near North Korea’s shuttered nuclear test site, South Korea has said, highlighting the area’s geological instability as Pyongyang hints ...

North Korea said Tuesday its latest weapons test was a new ... remote targets in the Pacific as leader Kim Jong Un vowed to further expand his collection of nuclear-capable weapons to counter ...

SEOUL, South Korea (AP) — North Korea said Tuesday its latest weapons test was ... targets in the Pacific as leader Kim Jong Un vowed to further expand his collection of nuclear-capable weapons ...