The Blue Line, which the UN had to determine was the line of deployment of the IDF before March 14, 1978, when Israel invaded Lebanon. In effect that line was recognised by both Lebanon and by Israel as the international border, and not just as the Armistice Demarcation Line of 1949[<span title="Some document needs to be cited. UNSC Res 425 "Calls for strict respect for the territorial integrity, sovereignty and political independence of Lebanon within its internationally recognized boundaries" it doesn't mention Israeli sovereignty over territories acquired in the 1948 war (November 2011)">citation needed] (what is commonly called the Green Line) following the 1948 Arab–Israeli War.