See L. W. Holborn, The International Refugee Organization (1956).
Temporary specialized agency of the United Nations system (1946–52). The IRO assisted refugees and displaced persons in Europe and Asia who could not or would not return home after World War II. Taking over the work of its principal predecessor, the United Nations Relief and Rehabilitation Administration, it also assumed responsibility for the legal protection and resettlement of refugees previously carried out by the Intergovernmental Committee on Refugees. It was succeeded by the Office of the United Nations High Commissioner for Refugees.
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The Constitution of the International Refugee Organization, adopted by the United Nations General Assembly on December 15, 1946, specified the agency's field of operations. Controversially, this defined "persons of German ethnic origin" who had been expelled, or were to be expelled from their countries of birth into the postwar Germany, as individuals who would "not be the concern of the Organization." This excluded from its purview a group that exceeded in number all the other European displaced persons put together. Also, because of disagreements between the Western allies and the Soviet Union, the IRO only worked in areas controlled by Western armies of occupation.
Eighteen countries acceeded to membership of the IRO: Australia, Belgium, Canada, China, Denmark, the Dominican Republic, France, Guatemala, Iceland, Italy, Luxembourt, the Netherlands, New Zealand, Norway, Switzerland, the United Kingdom, the United States, and Venezuela. The U.S. provided about 40% of the IRO's $155 million annual budget. The organisation's first Director General was William Hallam Tuck, succeeded by J. Donald Kingsley on July 31, 1949.