North Korea has built a secret military base near its border with China, which may hold its newest long-range ballistic missiles that pose a potential nuclear threat to the continental US. The base, located near Sinpung-dong in North Pyongan Province, lies about 17 miles (27 km) from the Chinese border, according to a new report by the Centre for Strategic and International Studies (CSIS) published on Wednesday. This covert site has been under construction since around 2004 and became operational about ten years later. Read the full story at Daily Mail #northkorea #china #missiles