United Nations System
There are 15 members of the Security Council, consisting of five veto-wielding permanent members (China, France, Russia, the United Kingdom, and the United States) and 10 elected non-permanent members with two-year terms. This basic structure is set out in Chapter V of the UN Charter. Security Council members must always be present at UN headquarters in New York so that the Security Council can meet at any time.
United Nations Security Council Resolution 1646
The Security Council decided that the five permanent members of the Security Council–China, France, Russia, the United Kingdom and United States–and two non-permanent members were to participate in the Organisational Committee of the Peacebuilding Commission. Furthermore, the resolution stated that the annual report of the Peacebuilding Commission would also be submitted to the Council for debate.