In ▁his ▁private ▁di ary , ▁Raymond - R a oul ▁Lam bert , ▁who ▁head ed ▁the ▁U G IF - S ud , ▁the ▁V ich y ▁government ' s ▁Union ▁of ▁French ▁Jews , ▁writes ▁on ▁ 1 7 ▁August ▁ 1 9 4 3 : The ▁ 2 8 ▁( 2 8 ▁July ▁ 1 9 4 3 ) ▁I ▁go , ▁with ▁Sim one ▁and ▁the ▁children , ▁to ▁visit ▁a ▁home ▁for ▁children ▁close ▁to ▁Voir on , ▁head ed ▁by ▁an ▁orth odox ▁rabb in ▁who ▁res emb les ▁Ras put in . ▁In ▁such ▁a ▁milieu ▁I ▁feel ▁Christian ▁and ▁Latin . The ▁Isra eli ▁historian ▁Richard ▁C ohen ▁thus ▁explains ▁Lam bert ' s ▁reaction : It ' s ▁about ▁ra bbi ▁Isaac ▁Ch ne erson ▁[ s ic ] ▁who ▁was ▁responsible ▁of ▁an ▁ult ra - orth odox ▁char itable ▁organization ▁( Associ ation ▁des ▁Isra él ites ▁pr ati qu ants ▁de ▁France , ▁Ke hill ath ▁H ah ared im ), ▁affili ated ▁to ▁the ▁ 3 e ▁D irection ▁de ▁l ' UG IF ▁( S ant é ). ▁The ▁" ass im il ated " ▁response ▁by ▁R RL ▁[ R ay mond - R a oul ▁Lam bert ] ▁is ▁not ▁surprising , ▁considering ▁the ▁content ▁of ▁the ▁letter ▁by ▁the ▁latter ▁( 2 ▁August ▁ 1 9 4 3 , ▁Y IV O : ▁R G ▁ 3 4 0 , ▁d oss ier ▁ 3