A more thorough explanation:

The International Atomic Energy Agency (IAEA) is an independent international organization established in 1957 to provide assistance to states interested in developing atomic energy. The agency's goal is to establish a system of inspection and control to ensure that the aid is not used for military purposes.

The IAEA was started based on U.S. President Eisenhower's "Atoms for Peace" address to the United Nations General Assembly on December 8, 1953. The agency seeks to accelerate and enlarge the contribution of atomic energy to peace, health, and prosperity throughout the world. It ensures that assistance provided by it or at its request or under its supervision or control is not used in such a way as to further any military purpose.

The IAEA Secretariat is headquartered at the Vienna International Centre in Vienna, Austria. The IAEA's relationship with the United Nations is regulated by a series of treaties that require the IAEA to keep the United Nations informed of its activities by submitting reports on its activities to the General Assembly at each regular session.

For example, the IAEA works with countries to ensure that their nuclear programs are peaceful and not being used to develop nuclear weapons. The agency conducts inspections and provides technical assistance to help countries use nuclear energy safely and securely. The IAEA also helps countries to manage their radioactive waste and to prevent nuclear accidents.