File Photo: North Korean supreme leader Kim Jong-Un. (Reuters Photo)
Seoul, South Korea:
North Korea could build a fully operational submarine equipped with ballistic missiles within two or three years, a South Korean defence official said on Monday.
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.
© Thomson Reuters 2015