Croatia was admitted to the UN on 22 May 1992. It is also a member of the ECE, IAEA, ICAO, IMF, OSCE, UNCTAD, UNESCO, UNIDO, UPU, WHO, WIPO, WMO, the WTO, and the World Bank. The UN sent peacekeeping troops to Croatia in the spring of 1992 to mediate an ongoing civil war in the region. In January 1996 the UN established the UN Transitional Administration for Eastern Slavonia (UNTAES) to supervise the peaceful reintegration of Eastern Slavonia into Croatia. Its mission ended in January 1998.