United Nations System peace and security. Its powers, outlined in the United Nations Charter, include the establishment of peacekeeping operations, the establishment of international sanctions, and the authorization of military action. Its powers are exercised through United Nations Security Council resolutions. The Security Council held its first session on 17 January 1946 at Church House, Westminster, London. Since its first meeting, the Council, which exists in continuous session, has travelled widely, holding meetings in many cities, such as Paris and Addis Ababa, as well as at its current permanent home at the United Nations Headquarters in New York City. There are 15 members
Headquarters of the United Nations UN Plaza) are also part of headquarters. In addition, the Church Center for the United Nations (777 UN Plaza) is a private building owned by the United Methodist Church as an interfaith space housing the offices of several non-governmental organizations. The Office of Internal Oversight Services (OIOS) is located at 380 Madison Avenue. In October 2011 city and state officials announced an agreement in which the UN would be allowed to build a long-sought new office tower adjacent to the existing campus on the current Robert Moses Playground, which would be relocated. In exchange, the United Nations would allow the