The systems tested included ballistic missiles, cluster bombs and a mobile short-range anti-aircraft missile system, the Korean Central News Agency (KCNA) reported. SEOUL: North Korea tested multiple weapon systems over three days this week, including the firing of ballistic missiles and cluster bombs, its state media said on Thursday (Apr 9). Systems tested also included a mobile short-range anti-aircraft missile system, the Korean Central News Agency (KCNA) reported. The tests took place on