North Korea's Kim Jong Un could conduct a nuclear test at the country's Punggye-ri nuclear test facility in a short time if he decided to, the Yonhap News Agency reported on Wednesday, citing South ...

Recently, South Korea’s Defense Intelligence Agency said North Korea “could carry out a nuclear test within a short period of ...

North Korea denounced an agreement between Seoul and Washington to build nuclear-powered submarines, saying in a state media ...

In the summer of 2017, the United States learned a humbling lesson. For years, American intelligence agencies had assessed that North Korea would need several more years—until 2020 or even 2022—before ...

We asked Professor Paul Bracken, an expert in nuclear strategy, what’s behind the posturing and what test explosions would mean for the world.

Pyongyang accuses Washington of "brazen military moves" that threaten its security and intentionally escalate regional tensions.

The South Korean military said North Korea fired a short-range ballistic missile toward its east coast on Friday.

The confusion rattled allies and arms control experts alike. Energy Secretary Chris Wright soon intervened to clarify that ...