<prompt> Qedela umusho olandelayo: Kusukela ngo-1948, uHenkin wasebenza ehhovisi leZizwe Ezihlangene loMnyango Wezwe Lase-United States, lapho ayengomunye wabantu ababenomthwalo wemfanelo we-Convention Relating to the Status of Refugees ngo-1951, isivumelwano esabeka incazelo evunyelwene ngamazwe omhlaba yalokho okwenza umuntu abe umbaleki futhi sabeka izimfuneko zamazwe zokunikeza isiphephelo kubantu abakhethwe kanjalo. Washiya uMnyango Wezwe ngo-1956 ukuze afundise unyaka owodwa e-Columbia University ngesihloko sokuqedwa kwezikhali zenuzi okwaba isihloko sencwadi yakhe yango-1958 ethi Arms Control and Inspection in American Law. Wafundisa eNyuvesi yasePennsylvania kusukela ngo-1958, eqhubeka nomsebenzi wakhe owawushicilelwe ngokuthi The  <response>: I-Berlin Crisis and the United Nations ngo-1959 nencwadi ethi Ukukhipha Izibhamu: Izithakazelo Zommeli, eyakhululwa ngo-1964. 