The 1963 Syrian coup d'état was led by three Alawites: Salah Jadid, Muhammad Umran and Hafez Al-Assad. Assad was from the Kalbiyya tribe, Umran from the Khayyatin, and Jadid from the Haddadin. Following Assad's seizure of sole power in 1970 (the Corrective Movement), part of his strategy was to concentrate control in the hands of members of the Kalbiyya tribe. In practice, active participation in the Assad government has, since then, been limited to members of the Kalbiyya tribe.