The United States is a permanent member of the security council and which international organization?

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: The People's Republic of China (formerly the Republic of China), the French Republic, the Russian Federation (formerly the Union of Soviet Socialist Republics, aka the Soviet Union), the United Kingdom of Great Britain and Northern Ireland, and the United States of America.

Answer: United Nations