North Korea launched a ballistic missile into the sea on Sunday (January 4, 2026), South Korea’s military said.

South Korea’s military said North Korea’s missile launch off the North’s east coast happened on Sunday morning but gave no further details.

Japan’s Defence Ministry also reported a suspected missile launch by North Korea. There were no immediate reports of any damages.

The launch is the latest weapons display by North Korea ahead of its upcoming ruling Workers’ Party congress.

Experts say North Korea is likely ramping up weapons tests to show off its achievements in the defence sector ahead of the congress, the first of its kind in five years. Observers are watching the congress to see whether North Korea will set a new policy on the U.S. and respond to its calls to resume long-stalled talks.

The launch also came hours before South Korea’s President, Lee Jae Myung, leaves for China for a summit with President Xi Jinping. During the trip, Mr. Lee’s office said he would request China to make “a constructive role” in efforts to promote peace on the Korean Peninsula.

Earlier this week, North Korea said it fired long-range strategic cruise missiles into the sea.