The International Atomic Energy Agency (IAEA) is an autonomous intergovernmental organization within the United Nations system, established to promote the peaceful use of nuclear energy and prevent its use for any military purpose, including nuclear weapons. Its formation was catalyzed by U.S. President Dwight D. Eisenhower's "Atoms for Peace" speech to the UN General Assembly on December 8, 1953, which proposed an international body to monitor and manage nuclear resources. The IAEA Statute was unanimously approved by 81 nations in October 1956, and the organization officially began operations on July 29, 1957, with its headquarters in Vienna, Austria. The IAEA's dual mission is defined in Article II of the IAEA Statute, which mandates it to "accelerate and enlarge the contribution of atomic energy to peace, health and prosperity" and to "ensure... that assistance provided by it... is not used in such a way as to further any military purpose".
The core mechanism of the IAEA is its Safeguards system, a set of technical measures applied to nuclear material and activities to independently verify that states are honoring their legal obligations to use nuclear technology only for peaceful purposes. The IAEA's verification role was significantly solidified by the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) of 1968, which requires all non-nuclear-weapon states to conclude a safeguards agreement with the IAEA under its Article III. A key development in strengthening this mechanism is the Additional Protocol, a legal document that complements Comprehensive Safeguards Agreements and grants the IAEA expanded access and information to provide assurance about the absence of undeclared nuclear material and activities. The IAEA connects directly to the United Nations General Assembly and the Security Council, to which it reports. In recent years, the IAEA has adopted the state-level concept for safeguards implementation, which considers a state's nuclear program as a whole rather than examining each facility separately, allowing for a tailored safeguards approach. The agency also plays a pivotal role in promoting peaceful applications of nuclear technology in areas like medicine, agriculture, and water resource management.