. ▁The ▁dispute ▁was ▁eventually ▁resolved ▁when ▁Eth iop ian ▁em peror ▁Ha ile ▁Sel ass ie ▁I ▁invited ▁the ▁two ▁groups ▁to ▁Add is ▁Ab aba , ▁where ▁the ▁O AU ▁and ▁its ▁headquarters ▁were ▁subsequently ▁established . ▁The ▁Char ter ▁of ▁the ▁Organisation ▁was ▁signed ▁by ▁ 3 2 ▁independent ▁African ▁states . ▁ ▁At ▁the ▁time ▁of ▁the ▁O AU ' s ▁dis band ing , ▁ 5 3 ▁out ▁of ▁the ▁ 5 4 ▁African ▁states ▁were ▁members ; ▁Mor oc co ▁left ▁on ▁ 1 2 ▁November ▁ 1 9 8 4 ▁following ▁the ▁ad mission ▁of ▁the ▁Sah raw i ▁Arab ▁Democratic ▁Republic ▁as ▁the ▁government ▁of ▁Western ▁Sah ara ▁in ▁ 1 9 8 2 . ▁ ▁Crit ic ism ▁and ▁pra ises ▁ ▁The ▁organisation ▁was ▁widely ▁der ided ▁as ▁a ▁b ureau cr atic ▁" t alk ing ▁shop " ▁with ▁little ▁power . ▁It ▁strugg led ▁to ▁en force ▁its ▁dec isions , ▁and ▁its ▁lack ▁of ▁armed ▁force ▁made ▁inter vention ▁exceed ingly ▁difficult . ▁Civil ▁wars ▁in ▁Niger ia ▁and ▁Ang ola ▁continued ▁un ab ated ▁for ▁years , ▁and ▁the ▁O AU ▁could ▁do ▁nothing ▁to ▁stop ▁them . ▁ ▁The ▁policy ▁of ▁non - inter ference ▁in ▁the ▁affairs ▁of ▁member ▁states ▁also ▁limited ▁the ▁effect iveness ▁of ▁the ▁O AU . ▁Thus , ▁when ▁human ▁rights ▁were ▁viol ated , ▁as ▁in ▁U g anda ▁under ▁Id i ▁A min ▁in ▁the ▁ 1 9 7 0 s