Switzerland is a member of many international organisations, including the World Trade Organization, Organisation for Economic Co-operation and Development, European Free Trade Association, Council of Europe, Organization for Security and Cooperation in Europe, International Atomic Energy Agency, and International Telecommunications Satellite Organization. Its central bank is a member of the Bank for International Settlements, based in Basel. Switzerland is an active participant in the Organization for Security and Co-operation in Europe, its foreign minister serving as Chairman-in-Office for 1996.