The United Nations’ nuclear watchdog has sounded the alarm over North Korea’s accelerating nuclear weapons program, warning that Pyongyang is expanding its ability to produce weapons‑grade material.

According to the International Atomic Energy Agency (IAEA), recent monitoring suggests increased activity at uranium enrichment facilities and other nuclear complexes. Director General Rafael Grossi described the developments as “very serious,” noting that North Korea continues to defy international calls for denuclearization.

The IAEA’s findings highlight the growing challenge of verification, as inspectors have limited access to North Korean sites. Despite this, satellite imagery and intelligence reports point to construction and operational activity consistent with weapons development.

Regional analysts warn that the expansion could destabilize East Asia, raising security risks for South Korea, Japan, and U.S. forces in the Pacific. The news also comes amid reports of North Korea’s ambitions to deploy nuclear‑powered submarines, potentially broadening its missile delivery systems.

Global powers are urging restraint and renewed dialogue, but diplomatic efforts remain stalled. The revelations underscore the fragile state of non‑proliferation agreements and the risk of a regional arms race if Pyongyang’s program continues unchecked.

For the international community, the IAEA’s warning is a reminder that North Korea is not only maintaining but actively boosting its nuclear capacity — a development with far‑reaching implications for global peace and security.