After a PLO attack on a bus in northern Israel and Israeli retaliation that caused heavy casualties, Israel invaded Lebanon in March 1978, occupying most of the area south of the Litani River. In response, the UN Security Council passed Resolution 425 calling for the immediate withdrawal of Israeli forces and creating the UN Interim Force in Lebanon (UNIFIL), charged with maintaining peace. Israeli forces withdrew later in 1978, turning over positions inside Lebanon along the border to their Lebanese ally, the South Lebanon Army (SLA) under the leadership of Maj. Sa'ad Haddad, thus informally setting up a 12-mile wide "security zone" to protect Israeli territory from cross border attack. | After a PLO attack on a bus in northern Israel and Israeli retaliation that caused heavy casualties, Israel invaded Lebanon in March 1978, occupying most of the area south of the Litani River. In response, the UN Security Council passed Resolution 425 calling for the immediate withdrawal of Israeli forces and creating the UN Interim Force in Lebanon (UNIFIL), charged with maintaining peace. Israeli forces withdrew later in 1978, turning over positions inside Lebanon along the border to their Lebanese ally, the South Lebanon Army (SLA) under the leadership of Maj. Sa'ad Haddad, thus informally setting up a 12-mile wide "security zone" to protect Israeli territory from cross border attack. |