The content originally appeared on: CNN Seoul (CNN)North Korea has fired a ballistic missile into the waters off the east coast of the Korean peninsula, according to officials in both South Korea and Japan. The short range missile was fired early Sunday morning local time from the Taechon area of North Pyongan Province, according to South Korea's Joint Chiefs of Staff (JCS). It said the South Korean and US militaries are maintaining 'full readiness posture' and closely cooperating following the […]