North Korea's new reactor at nuke site likely to be formally operational next summer, Seoul says

South Korea's defense minister stated that a light-water reactor at North Korea's main nuclear complex is expected to be operational by next summer. This raises concerns that North Korea may use it as a new source of fissile materials for nuclear weapons. The reactor, located at the Yongbyon nuclear complex, has been observed showing signs of operation by the UN atomic agency and foreign experts. The increased activity and strong water outflow from the cooling system have been noted. The reactor's operation violates UN Security Council resolutions and raises concerns about safety.