South Korea: North Korea missile used ‘cold eject’ launch system

A missile fired by North Korea on Sunday used a "cold eject" launch system, where the missile is initially propelled by compressed gas before its rocket engine ignites, South Korea's military said on Monday. The source told Reuters that North Korea's missile was a new type of solid-fuel intermediate-range missile using submarine-launched ballistic missile technology,
North Korea said on Monday it had successfully test-fired a new type of medium- to long-range ballistic missile the previous day, claiming further advancement in its missile technology.