Political map of the Eastern Mediterranean 15 November 1976 (Lebanese Civil War): The influx of Palestinian refugees and militants into Lebanon—especially after the Six-Day War (1967) and Black September (1970)—destabilized the half-Muslim, half-Christian country. In 1975 civil war broke out (Lebanese Civil War), leading to the eventual division of the country between the Palestinian, Muslim, and leftist Lebanese National Movement (LNM) and the Christian and rightist Lebanese Front (LF). Wary of Palestinian successes, Syria intervened in support of the LF in 1976 (Syrian occupation of Lebanon), but failed to bring the war to a conclusive end.