The South Korean military is developing anti-ship cruise missiles after sea trials of China's first aircraft carrier sparked regional security concerns. Seoul's Chosun Ilbo daily said on Wednesday that development of the supersonic missiles is expected to be complete in three or four years. The newspaper quoted an unidentified South Korean government source as saying the fully-fledged research on the development of supersonic anti-ship missiles has been underway at the Agency for Defense Development for years. Both ADD and Seoul's Defense Acquisition Programme Administration declined to comment. PM says govt is ready for discussion on any issue in Parliament