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.
Eastern European Group
The Eastern European Group has two seats in the United Nations Security Council (UNSC); the permanent seat of Russia, and one elected seat, currently held by Ukraine. The Group further has 6 seats on the United Nations Economic and Social Council and 6 seats on the United Nations Human Rights Council. It is also eligible for having its nationals elected as President of the United Nations General Assembly in years ending with 2 and 7; most recently, Vuk Jeremić of Serbia was elected to this position in June 2012 and was the office holder of the Sixty-seventh session.