Lithuania is a European country located on the south-eastern shore of the Baltic Sea. It is a member of the United Nations, the Organisation for Security and Cooperation in Europe, the European Union, the North Atlantic Treaty Organisation and the World Trade Organisation. Currently, Lithuania maintains diplomatic relations with 186 states.[1] It became a member of the United Nations on 18 September 1991, and is a signatory to a number of its organizations and other international agreements. It is also a member of the Organization for Security and Cooperation in Europe,[2] NATO and its adjunct North Atlantic Coordinating Council, the Council of Europe, and the European Union. Lithuania gained membership in the World Trade Organization on 31 May 2001.