(LEAD) N. Korea tests cluster bomb mountable on tactical ballistic missiles

What happened: North Korea tested a cluster-bomb warhead mountable on tactical ballistic missiles, KCNA said, and vowed to field various cluster warhead types by the end of the year. Key numbers: Standard Type 2 warhead said capable of covering 12 to 13 hectares; warheads classified into four categories; test held Saturday, reported Sunday; April Why it matters: South Korea's military said it tracked the launch toward the Yellow Sea with U.S. information sharing. An analyst identified the missile as the Hwasong-11 Ra. The test came amid trilateral calls for North Korea's denuclearization.

North Korea tested a cluster-bomb warhead mountable on tactical ballistic missiles, KCNA said, and vowed to field various cluster warhead types by the end of the year.

South Korea's military said it tracked the launch toward the Yellow Sea with U.S. information sharing. An analyst identified the missile as the Hwasong-11 Ra. The test came amid trilateral calls for North Korea's denuclearization.