N. Korea tests nuke drone at sea

Underwater explosion: The blast of the nuclear attack craft ‘Haeil’ is seen during an exercise around Hongwon Bay. — AP

SEOUL: North Korea claimed to have tested a nuclear-capable underwater drone designed to generate a gigantic “radioactive tsunami” that would destroy naval strike groups and ports.

Analysts were sceptical that the device presents a major new threat, but the test underlines the North’s commitment to raising nuclear threats.