United Nations Security Council
The Security Council consists of fifteen members. The great powers that were the victors of World War II—the Soviet Union (now represented by Russia), the United Kingdom, France, China, and the United States—serve as the body's five permanent members. These permanent members can veto any substantive Security Council resolution, including those on the admission of new member states or candidates for Secretary-General. The Security Council also has 10 non-permanent members, elected on a regional basis to serve two-year terms. The body's presidency rotates monthly among its members.
Military Staff Committee
Though the Military Staff Committee is referred to in the Charter prior to its formal establishment, including in Article 26 and earlier Articles in Chapter 7, it is actually established by Article 47, which defines the membership of the Committee as "the Chiefs of Staff of the permanent members of the Security Council or their representatives". It is also referred to in the first United Nations Security Council resolution. The MSC is the only subsidiary body of the Security Council named in the Charter, and by far the longest-standing subsidiary council of the UN. The MSC remains active in the UN as a cadre of military advisors to their government's diplomats and peacekeeping.