The International Union of Anthropological and Ethnological Sciences (IUAES) is the largest world forum of anthropologists and ethnologists, with members from more than fifty countries. Every five years, in different parts of the world, the IUAES sponsors a major Congress (ICAES/World Congress), gathering researchers from all of the various subfields and branches of anthropology. The IUAES was founded under the auspices of UNESCO in 1948. The International Congress of Anthropological and Ethnological Sciences (ICAES) had been separately founded in London in 1934. The two organizations united in 1948, and merged officially in 1968. The main objective of the IUAES is the internationalization of anthropology, and the cross-cultural honing and public dissemination of anthropological research perspectives.