What was the Green Line in Beirut during the Lebanese Civil War?

During the Lebanese Civil War, the Green Line served as a dangerous barricade that physically divided Beirut from the 1970s until 1990. It functioned as a demarcation line separating the city into two distinct sectors: Muslim-controlled West Beirut and Christian-controlled East Beirut.12

Throughout the conflict, this line was controlled by opposing militias, effectively splitting the capital and hindering movement between the two sides. The existence of the Green Line reflected the deep sectarian divisions of the war, and it remained a persistent feature of the city's landscape until the end of the civil war in 1990.12