“North Korea didn’t launch a ballistic missile from a submarine, contrary to its government proclamations and news reports, according to two U.S. officials. Instead, the U.S. intelligence assessment is that the secretive communist country may have tested the compressed-gas ejection system that’s needed to begin launching a missile from a submerged vessel, according to the officials, who asked not to be identified discussing the internal appraisal.”
Source: North Korea Didn’t Launch Submarine Missile, U.S. Officials Say – Bloomberg Business