N Korea says tested another underwater nuclear attack 'drone'

North Korea has conducted another test of a nuclear-capable underwater attack drone, according to state media. The country tested the so-called Haeil-2 more than a week after it disclosed a new underwater drone system dubbed Haeil-1, which translates to "tsunami" in Korean, and is designed to undertake sneak attacks in enemy waters. Analysts are sceptical about whether the underwater vehicle is ready for deployment but say North Korea is eager to display its diverse weaponry against the United States and South Korea, which have been conducting large-scale military exercises in recent weeks. The latest test took place from April 4 to April 7, state media KCNA reported on Saturday. "The underwater nuclear attack drone Haeil-2 … cruised 1,000km [621 miles] of simulated underwater distance," the agency said, adding that the test warhead was also detonated.