The union was not a success, however. Following a military coup on 28 September 1961, Syria seceded, reestablishing itself as the Syrian Arab Republic. Instability characterised the next 18 months, with various coups culminating on 8 March 1963, in the installation by leftist Syrian Army officers of the National Council of the Revolutionary Command (NCRC), a group of military and civilian officials who assumed control of all executive and legislative authority. The takeover was engineered by members of the Arab Socialist Resurrection Party (Ba'ath Party), which had been active in Syria and other Arab countries since the late 1940s. The new cabinet was dominated by Ba'ath members.