▁the ▁single ▁party ▁system . ▁ ▁Arr ested ▁and ▁sent enced ▁to ▁death ▁in ▁ 1 9 6 4 , ▁he ▁escaped ▁from ▁the ▁El ▁Har rach ▁prison ▁on ▁May ▁ 1 , ▁ 1 9 6 6 . ▁Ex iled ▁in ▁Switzerland , ▁he ▁became ▁a ▁doctor ▁of ▁law . ▁After ▁the ▁ri ots ▁of ▁ 1 9 8 8 , ▁the ▁Al ger ian ▁president ▁Ch ad li ▁Ben ▁D jed id ▁proposed ▁a ▁new ▁constitution ▁calling ▁for ▁political ▁pl ural ism . ▁A it ▁Ah med ▁was ▁invited ▁to ▁return ▁to ▁his ▁country , ▁where ▁he ▁came ▁back ▁in ▁December ▁ 1 9 8 9 , ▁at ▁the ▁head ▁of ▁the ▁F FS , ▁but ▁again ▁left ▁his ▁country ▁after ▁the ▁assass ination ▁of ▁the ▁President , ▁Moh amed ▁B oud ia f , ▁in ▁June ▁ 1 9 9 2 . ▁He ▁has ▁repeatedly ▁returned ▁to ▁Al ger ia ▁since ▁then , ▁including ▁during ▁the ▁ 5 0 th ▁anni versary ▁of ▁the ▁out break ▁of ▁the ▁war ▁of ▁liber ation ▁( Nov ember ▁ 1 , ▁ 1 9 5 4 ). ▁A ï t ▁Ah med ▁died ▁at ▁the ▁age ▁of ▁ 8 9 ▁in ▁La us anne , ▁Switzerland ▁on ▁ 2 3 ▁December ▁ 2 0 1 5 . ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : 1 9 2 6 ▁birth s ▁Category : 2 0 1 5 ▁death s ▁Category : Al ger ian ▁Ber ber ▁polit icians ▁Category : Pe ople ▁from