▁ 1 6 2 2 ), ▁with ▁Card inal ▁Rich el ieu ▁secured ▁for ▁him ▁the ▁title ▁of ▁secretary ▁of ▁state ▁in ▁ 1 6 2 8 , ▁and ▁he ▁was ▁able ▁to ▁remain ▁on ▁good ▁terms ▁with ▁both ▁Marie ▁de ▁Med ici ▁and ▁Rich el ieu , ▁in ▁spite ▁of ▁their ▁rival ry . ▁In ▁ 1 6 3 2 ▁he ▁became ▁Super int endent ▁of ▁Fin ances . ▁But ▁his ▁great ▁role ▁was ▁in ▁diplom acy . ▁ ▁Rich el ieu ▁employed ▁him ▁on ▁many ▁diplom atic ▁miss ions , ▁and ▁the ▁success ▁of ▁his ▁foreign ▁policy ▁was ▁due ▁in ▁no ▁small ▁degree ▁to ▁B outh ill ier ' s ▁ability ▁and ▁dev otion . ▁In ▁ 1 6 3 0 ▁he ▁had ▁taken ▁part ▁at ▁Reg ens burg ▁in ▁arr anging ▁the ▁abort ive ▁treat y ▁between ▁the ▁em peror ▁and ▁France . ▁From ▁ 1 6 3 3 ▁to ▁ 1 6 4 0 ▁he ▁was ▁contin ually ▁bus ied ▁with ▁secret ▁miss ions ▁in ▁Germany , ▁sometimes ▁alone , ▁sometimes ▁with ▁Father ▁Joseph . ▁Following ▁Rich el ieu ' s ▁instructions , ▁he ▁negoti ated ▁the ▁al li ances ▁which ▁brought ▁France ▁into ▁the ▁Th irty ▁Years ' ▁War . ▁ ▁Meanwhile , ▁at ▁home , ▁his ▁tact ▁and ▁ami able ▁disposition , ▁as ▁well ▁as ▁his ▁reputation ▁for ▁straightforward ness , ▁had ▁secured ▁for ▁him ▁a ▁unique ▁position ▁of ▁influence ▁in ▁a ▁court ▁torn ▁by ▁je alous ies ▁and ▁intr ig ues . ▁Tr usted ▁by ▁the