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
Institution drawing membership from at least three states, having activities in several states, and whose members are held together by a formal agreement. Only a few existed before 1850; several thousand were active in the early 21st century. Some are intergovernmental (e.g., the United Nations), and some are nongovernmental (e.g., Amnesty International). Some have multiple worldwide or regional purposes (e.g., the European Union), and some have single purposes (e.g., the World Intellectual Property Organization). One effect of their proliferation is a stronger sense of interdependence among states, which in turn has stimulated recognition of the need for cooperation to address international and global problems