▁put ▁the ▁American ▁states ▁on ▁record ▁as ▁ref using ▁to ▁recognize ▁any ▁territorial ▁change ▁in ▁the ▁hem is phere ▁brought ▁about ▁by ▁force . ▁Next , ▁he ▁drew ▁up ▁a ▁Tre aty ▁of ▁Non ag gression ▁and ▁Conc ili ation ▁which ▁was ▁signed ▁by ▁six ▁South ▁American ▁countries ▁in ▁October , ▁ 1 9 3 3 , ▁and ▁by ▁all ▁of ▁the ▁American ▁countries ▁at ▁the ▁Se vent h ▁Pan - American ▁Conference ▁at ▁Monte video ▁two ▁months ▁later . ▁In ▁ 1 9 3 5 ▁he ▁organized ▁med iation ▁by ▁six ▁neutral ▁American ▁nations ▁which ▁resulted ▁in ▁the ▁c ess ation ▁of ▁host ilities ▁between ▁Par agu ay ▁and ▁Boliv ia . ▁Meanwhile , ▁in ▁ 1 9 3 4 , ▁Sa aved ra ▁Lam as ▁presented ▁the ▁South ▁American ▁Anti war ▁P act ▁to ▁the ▁League ▁of ▁Nations ▁where ▁it ▁was ▁well ▁received ▁and ▁signed ▁by ▁eleven ▁countries . ▁Acc laimed ▁for ▁all ▁of ▁these ▁efforts , ▁he ▁was ▁elected ▁president ▁of ▁the ▁Assembly ▁of ▁the ▁League ▁of ▁Nations ▁in ▁ 1 9 3 6 . ▁ ▁After ▁his ▁ret irement ▁from ▁the ▁foreign ▁min istry ▁in ▁ 1 9 3 8 , ▁Sa aved ra ▁Lam as ▁returned ▁to ▁academic ▁life , ▁became ▁president ▁of ▁the ▁University ▁of ▁Buenos ▁Aires ▁for ▁two ▁years ▁( 1 9 4 1 – 1 9 4 3 ), ▁and ▁rounded ▁out ▁his ▁career ▁as ▁a ▁professor ▁for ▁an ▁additional ▁three ▁years ▁( 1 9 4 3 – 1 9 4 6 ). ▁ ▁Sa