The Arab Socialist Ba'ath Party – Syria Region ( "Ḥizb al-Ba‘th al-'Arabī al-Ishtirākī – Quṭr Sūriyā"), officially the Syrian Regional Branch (Syria being a "region" of the Arab nation in Ba'ath ideology), is a neo-Ba'athist organisation founded on 7 April 1947 by Michel Aflaq, Salah al-Din al-Bitar and followers of Zaki al-Arsuzi. It was first the regional branch of the original Ba'ath Party (1947–1966) before it changed its allegiance to the Syrian-dominated Ba'ath movement (1966–present) following the 1966 split within the original Ba'ath Party. The party has ruled Syria continuously since the 1963 Syrian coup d'état which brought the Ba'athists to power.