The United Nations was established in 1945 to replace the League of Nations and currently has 193 member states, with headquarters in New York City. It aims to promote international cooperation and is governed by the General Assembly, Security Council, Economic and Social Council, Secretariat, and International Court of Justice. The UN Secretariat, led by Secretary-General Ban Ki-moon, is the administrative organ of the UN and assists the other organs while also drawing attention to threats to international peace and security.