A mix-up over a US spy drone flying near the inter-Korean border has raised questions about a potential communication gap between the allies after South Korean forces mistook the drone for an enemy threat and had almost prepared to shoot it down. On Thursday, the unmanned flying vehicle was spotted in the buffer zone, known as the Civilian Control Line, south of the Military Demarcation Line separating the two Koreas. The Army's 1st Corps, responsible for front-line defense, activated Durumi, an