 Complete the following phrase:  The situation in Lebanon was very complicated, particularly given that the PLO itself was sometimes divided and various factions played different roles at different times. In 1976, the arrival of a Syrian-organized Palestinian fedayeen made matters even more complex and there are huge numbers of reports of intimidation, torture and murder from Lebanese forces, Israeli forces, PLO or PLO-affiliated groups and non-specific fedayeen soldiers. For example, the initial catalyst for PLO involvement in the internal Lebanese issue could be said to be the Phalange attack on a bus in April 1975. According to one journalistic endeavour from the Jerusalem Post, there was little or no substantive proof for many of the atrocity stories making the rounds, which suggests that there was generally a deal of hearsay and over-inflated reporting about PLO mistreatment of civilians. However, the academic Jillian Becker has suggested that Lebanon was destroyed by, and because of, the PLO. Many point to the Damour massacre as a key example of PLO barbarity, although again this was in theory a response to a Phalange 