Sha'ar ya shiga rundunar soji a 1971 kuma ya rike mukamai da dama na tsaro, ciki har da shugaban tsaro na soja a Tartous, shugaban tsaro na soja a Aleppo, da kwamandan da kuma shugaban 'yan sandan soja na Siriya. Ya kasance kwamandan' yan sanda na soja kafin a nada shi ministan cikin gida.An nada shi ministan cikin gida a watan Afrilun 2011, ya maye gurbin Said Mohammad Sammour. Tambaya: Menene matsayin Sha'ar a Aleppo?
shugaba