On 23 February 1966, the Military Committee carried out an intra-party overthrow, imprisoned President Amin Hafiz and designated a regionalist, civilian Ba'ath government on 1 March. Although Nureddin al-Atassi became the formal head of state, Salah Jadid was Syria's effective ruler from 1966 until November 1970, when he was deposed by Hafez al-Assad, who at the time was Minister of Defense. The coup led to a split within the original pan-Arab Ba'ath Party: one Iraqi-led ba'ath movement (ruled Iraq from 1968 to 2003) and one Syrian-led ba'ath movement was established.