How did the 1975 Lebanese Civil War start? What were the main causes? What were the main conflicting ideologies?

Lebanon's eastern borders meet with Syria, an Arabic country theoretically considered a strategic ally against the Zionist state located south of Lebanon: Israel. The Israeli-Arab conflict began in 1948 with the conquest of the land of Palestine by the Zionist movement. Almost thirty years later, Lebanon was struck by a long series of "earthquakes" that rendered the country a fragmented entity held together by a thin matrix. In precisely 1975, the tensions that had been building up …

…the Cold War. Tracing the history of the Lebanese civil conflict revealed to be extremely difficult since political parties and international support shifted with the protection of personal interests. It is common for people to conclude that the Lebanese people paid 15 long years of war and suffering for what seems to be very similar to an international chess game; to a higher level of abstraction a chess game between the Kremlin and the White House.