Permanent members of the United Nations Security Council
The permanent members of the United Nations Security Council (also known as the Permanent Five, Big Five, or P5) are the five states which the UN Charter of 1945 grants a permanent seat on the UN Security Council: China (formerly the Republic of China), France, Russia (formerly the Soviet Union), the United Kingdom, and the United States. These countries were all allies in World War II, which they won. They are also all nuclear weapons states. A total of 15 UN member states serve on the UNSC, the remainder of which are elected. Any one of the five permanent members have the power of veto, which enables them to prevent the adoption of any "substantive" draft Council resolution, regardless of its level of international support.
United Nations Economic and Social Council
The United Nations Economic and Social Council (ECOSOC; , ) is one of the six principal organs of the United Nations, responsible for coordinating the economic, social, and related work of 15 UN specialized agencies, their functional commissions and five regional commissions. The ECOSOC has 54 members. The General Assembly selects 18 new members for ECOSOC each year for the term of 3 years with a provision that a retiring member can be re-elected. It holds one seven-week session each year in July, and since 1998, it has also held an annual meeting in April with finance ministers heading key committees of the World Bank and the International Monetary Fund (IMF).