The American-led United Nations Command (UNC) has said a Military Demarcation Line (MDL) marking the boundary between the two Koreas has been under its authority, in an apparent objection to an internal revision by South Korea's military over land border rules to prevent accidental clashes with North Korea. The UNC said in statement to Yonhap News Agency, "The United Nations Command reaffirms its commitment to maintaining the Armistice Agreement, including the MDL, and to supporting measures that prevent escalation and promote stability within the Demilitarized Zone (DMZ)." The statement came when asked how the UNC assessed the South Korean military's envisioned revision of border rules, after the Korean military reportedly refined the MDL markers in order to reduce discrepancies between the two sides. "The Military Demarcation Line was established and depicted in Map Volume I of the Korean Armistice Agreement on July 27, 1953, following a series of armistice negotiations," the UNC said. Last week, South Korea's Joint Chiefs of Staff said it had ordered troops to prioritize markers that