Upheaval dominated Syrian politics from independence through the late 1960s. In May 1948, Syrian forces invaded Palestine, together with other Arab states, and immediately attacked Jewish settlements. Their president Shukri al-Quwwatli instructed his troops in the front, "to destroy the Zionists". The Invasion purpose was prevention of the establishment of the State of Israel. Defeat in this war was one of several trigger factors for the March 1949 Syrian coup d'état by Col. Husni al-Za'im, described as the first military overthrow of the Arab World since the start of the Second World War. This was soon followed by another overthrow, by Col. Sami al-Hinnawi, who was himself quickly deposed by Col. Adib Shishakli, all within the same year.