ic ▁revolution , ▁was ▁st ab bed ▁to ▁death ▁November ▁ 1 9 8 8 ▁by ▁an ▁ass ail ant ▁pos ing ▁as ▁a ▁patient ▁at ▁a ▁clin ic . ▁No ▁one ▁was ▁arrested . ▁ ▁Abd ul ▁Rah man ▁Gh ass em lou ▁and ▁his ▁assistant ▁Abd ul lah ▁Gh ader i ▁Az ar ▁were ▁murder ed ▁on ▁ 1 3 ▁July ▁ 1 9 8 9 ▁in ▁Vienna ▁during ▁neg ot iation ▁with ▁Iran ' s ▁government . ▁ ▁S ade gh ▁Sh ar af k and i , ▁F att ah ▁Abd oli , ▁Hom ay oun ▁Ar dal an , ▁and ▁ ▁N ouri ▁De h kord i ▁– ▁All ▁four ▁opposition ▁leaders ▁were ▁assass in ated ▁in ▁Germany ▁during ▁the ▁My kon os ▁restaurant ▁assass in ations . ▁ ▁S iam ak ▁San j ari ▁– ▁killed ▁on ▁his ▁wed ding ▁night ▁in ▁November ▁ 1 9 9 6 . ▁ ▁Ali ▁Ak bar ▁Sa idi ▁Sir j ani ▁– ▁Iran ian ▁writer , ▁poet ▁and ▁journalist ▁who ▁was ▁imprison ed ▁in ▁ 1 9 9 4 ▁and ▁died ▁shortly ▁after ▁while ▁in ▁prison ▁from ▁a ▁pot ass ium ▁supp os itory ., . ▁ ▁A hm ad ▁T af azz oli ▁– ▁a ▁prominent ▁Iran ist ▁and ▁master ▁of ▁ancient ▁Iran ian ▁literature ▁and ▁culture , ▁found ▁dead ▁in ▁January ▁ 1 9 9 7 . ▁ ▁E bra him ▁Z al za de h ▁– ▁editor ▁of ▁the ▁month ly ▁magazine ▁Me ' yar ▁and ▁the