North Korea appears to have tested sub-launched missile - South Korean media
South Korea's Yonhap News Agency cited an unnamed South Korean government official as saying Pyongyang appeared to have conducted an ejection test of a submarine-launched ballistic missile (SLBM) in December, following a reported failure of such a test in November.
A South Korean military official told Reuters that North Korea continued to developed submarine-launched missile capability but expects it will take a substantial period of time for it to be able to successfully deploy such a weapon.
(Reporting by Ju-min Park; Editing by Michael Perry)