Background about the 1982 event known as the Sabra and Shatila massacres, where "[m]ore than 1,000 people [were] feared to have been killed during a 24-hour rampage by Lebanese militia in West Beirut. ... The massacre was apparently revenge for the assassination four days [previously] of the Christian President-elect, Bashir Gemayel." Provides a timeline with related events concerning Israel, Lebanon, and the Middle East. From the British Broadcasting Corporation (BBC).