A report from the state-run Korean Central News Agency (KCNA) said the drone, called the βUnmanned Underwater Nuclear Attack Craft βHaeil,ββ was tested from March 21 to 23, cruising in waters off the countryβs east coast for more than 59 hours before its test warhead was detonated on Thursday afternoon.
βThe mission of the underwater nuclear strategic weapon is to stealthily infiltrate into operational waters and make a super-scale radioactive tsunami through underwater explosion to destroy naval striker groups and major operational ports of the enemy,β the KCNA report said.