North Korea can develop missile-equipped submarines in 2-3 years - South Korean official
The official, who requested anonymity because of the sensitivity of the matter, said photos of North Korea's test of a submarine-launched ballistic missile appeared authentic.
North Korea said on Saturday it had successfully test-fired a ballistic missile from a submarine. Such a development, if verified, would mark a significant new technological achievement for Pyongyang.
(Reporting by Ju-min Park; Editing by Paul Tait)