Six-Day War
The Suez Crisis in 1956 established a geopolitical situation that failed to solve the problems in the area. The  crisis made the United Nations send troops to the Sinai Peninsula to maintain the peace between Egypt and Israel. The coming to power of the Ba'th Party in Syria in 1963; the establishment of the Palestinian Liberation Organization in 1964; and the alliance of Syria, Egypt, and Jordan in 1966 contributed to the rise of tensions, which eventually led led to the war.