Lithuania was admitted to the UN on 17 September 1991. The country is a member of OSCE, EBRD, FAO, IAEA, IBRD, ILO, IMF, UNCTAD, UNESCO, UNIDO, UPU, WHO, WIPO, WMO, and WTO. Lithuania has especially close ties with the countries of the European Union, and was formally invited to join that body in December 2002, with accession slated for 2004. It is not a member of the CIS. Lithuania was invited to join NATO in November 2002, with accession planned for 2004.