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Membership

The process of joining the IAEA is fairly simple. Normally, a State would notify the Director General of its desire to join, and the Director would submit the application to the Board for consideration. If the Board recommends approval, and the General Conference approves the application for membership, the State must then submit its instrument of acceptance of the IAEA Statute to the United States, which functions as the depositary Government for the IAEA Statute. The State is considered a member when its acceptance letter is deposited. The United States then informs the IAEA, which notifies other IAEA Member States. Signature and ratification of the Nuclear Non-Proliferation Treaty (NPT) are not preconditions for membership in the IAEA.

The IAEA has 178 member states. Most UN members and the Holy See are Member States of the IAEA.

Four states have withdrawn from the IAEA. North Korea was a Member State from 1974 to 1994, but withdrew after the Board of Governors found it in non-compliance with its safeguards agreement and suspended most technical co-operation. Nicaragua became a member in 1957, withdrew its membership in 1970, and rejoined in 1977, Honduras joined in 1957, withdrew in 1967, and rejoined in 2003, while Cambodia joined in 1958, withdrew in 2003, and rejoined in 2009.