South Korea becomes 8th country to fire ballistic missile from sub

SEOUL -- The South Korean military conducted its first successful underwater test of a submarine-launched ballistic missile, it was revealed Tuesday, setting the stage for an intensified missile development race with North Korea.

The new Dosan Ahn Chang-ho submarine that went into service last month conducted the test last Wednesday, according to a report by South Korea's Yonhap News Agency that cited confidential sources.