▁the ▁French ▁daily ▁Lib ération ▁and ▁for ▁Europe ▁ 1 ▁radio . ▁He ▁was ▁a ▁political ▁activ ist ▁and ▁trade ▁union ist ▁during ▁his ▁studies . ▁ ▁Biography ▁ ▁Education ▁ ▁After ▁studying ▁for ▁the ▁most ▁part ▁in ▁Africa , ▁he ▁studied ▁Philosoph y , ▁History , ▁Ge opol it ics ▁and ▁Str ateg ic ▁Affairs ▁at ▁the ▁University ▁of ▁Paris ▁P ant he on - S or bon ne . ▁He ▁received ▁the ▁Memorial ▁Fellow ship ▁of ▁the ▁German ▁Marshall ▁Fund ▁of ▁the ▁United ▁States . ▁He ▁was ▁also ▁an ▁aud itor ▁of ▁the ▁ 6 2 nd ▁National ▁Session ▁of ▁the ▁Institute ▁of ▁Advanced ▁Studies ▁in ▁National ▁Def ense 2 . ▁, ▁he ▁studied ▁Philosoph y , ▁History , ▁Ge opol it ics ▁and ▁Str ateg ic ▁Affairs ▁at ▁the ▁University ▁of ▁Paris ▁ 1 ▁P ant he on - S or bon ne . ▁He ▁received ▁the ▁Memorial ▁Fellow ship ▁of ▁the ▁German ▁Marshall ▁Fund ▁of ▁the ▁United ▁States . ▁He ▁was ▁also ▁an ▁aud itor ▁of ▁the ▁ 6 2 nd ▁National ▁Session ▁of ▁the ▁Institut ▁des ▁ha utes ▁études ▁de ▁déf ense ▁nationale . ▁ ▁Activ ities ▁ ▁Through ▁the ▁ 1 9 7 0 s ▁Did ier ▁was ▁active ▁in ▁the ▁Revolution ary ▁Commun ist ▁League ., ▁Then ▁in ▁the ▁ 1 9 8 0 s ▁he ▁was ▁at ▁the ▁National ▁Office ▁of ▁U NE F - ID ▁( stud ents ’ ▁union ). ▁In ▁ 1 9 8 4 ▁he ▁and ▁Jul ien ▁D ray ▁and