The influential sister of North Korean leader Kim Jong Un mocked South Korea's ability to detect its weapons launches.

North Korea has increased its warlike rhetoric in recent months in response to an expansion of U.S.-South Korean military drills.

The North Korean leader called for “overwhelming” war readiness to cope with U.S.-led confrontational moves, state media reported Sunday.

South Korea’s military said Sunday that it had detected that North Korea fired at least one ballistic missile toward its eastern waters.

The United States is developing a powerful new nuclear weapon for potential use against hardened military targets.

Responses to lack of action by Biden administration include "appeasement," "unforgivable," and "heart breaking."

Simulations based on what little we know about Israel's nuclear arsenal and delivery capabilities result in gargantuan fatality estimates.

Russians resume Cold War habits while millions of Americans grow jittery over EAS messages. May you live in interesting times.

Russia will conduct an unprecedented national drill next week to prepare for the event of a nuclear attack.

"It would be real trouble," the president said -- but not about nuclear war. "There's no way back from that."