North Korea introduced on the twenty second that it performed a drill to launch 4 strategic cruise missiles from Hamkyung South Province within the east towards the Sea of Japan. In addition, on the twenty first, a brand new kind of underwater assault weapon known as the “Nuclear Unmanned Underwater Attack Boat” shall be examined for launch, navigating the Sea of Japan at depths of 80 to 150 meters over a interval of 59 hours. It is alleged that an underwater explosion occurred within the assumed water space.
Source
North Korea cruise missile launch coaching New underwater assault weapon launch take a look at | NHK
