nuclear test

Russia may be planning nuclear weapons test near Ukraine border

NATO intelligence briefing details Russian plan to test nuclear "doomsday weapon" as show of strength.

South Korean official:

'North Korean nuclear test will be met with stern measures'

South Korea's top security adviser: We'll respond with stern measures to a new North Korean nuclear test.

US, South Korea:

'There will be a swift response to North Korean nuclear test'

US and South Korea warn North Korea against conducting a nuclear test, but again offer talks.

Report: Israel conducted nuclear experiment in 1979

Experts believe a double flash over the South Atlantic 40 years ago was an Israeli nuclear test.

North Korea confirms hydrogren bomb test

Pyongyang confirms its sixth nuclear test, after 6.3-magnitude tremor was recorded near nuclear test site.

North Korea: We tested missile carrying large nuclear warhead

North Korea provides details about latest ballistic missile test, says it was supervised by leader Kim Jong Un.

UN official: Israel should ratify nuclear test ban in 5 years

UN official says Israel should ratify the Comprehensive Nuclear Test Ban Treaty within five years.

North Korea prepping nuclear site for new tests

South Korea reveals northern neighbor digging new tunnel at nuclear test site in advance of 4th test, days before regional summit.

North Korea Poses Problem for Obama Ahead of Big Address

North Korea's nuclear blast Tuesday rudely interrupted President Barack Obama's rollout of his State of the Union address.