SEOUL - North Korean leader Kim Jong Un supervised the test launch of newly developed anti-ship cruise missiles, the country's official KCNA news agency reported on Friday. Its new missile was 'a powerful measure of offense to hit a group of enemy warships attempting to stage military strikes' on the North, KCNA said. Pyongyang launched several land-to-sea missiles early on Thursday off its east coast, South Korea's military said. North Korea's official media routinely report on such missile launches the following day.