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The IAEA: Nuclear Watchdog

How the International Atomic Energy Agency monitors nuclear programs and verifies compliance with the NPT.

The World's Nuclear Inspector

The International Atomic Energy Agency (IAEA), established in 1957, has a dual mandate: promote peaceful uses of nuclear energy and verify that nuclear materials are not diverted for weapons purposes.

The IAEA's safeguards system is the verification backbone of the NPT. Under comprehensive safeguards agreements, non-nuclear-weapon states must declare all nuclear materials and facilities. IAEA inspectors then verify these declarations through:

  • On-site inspections of declared nuclear facilities
  • Remote monitoring using cameras and sensors installed at nuclear sites
  • Environmental sampling to detect undeclared nuclear activities
  • Accounting of all nuclear materials to ensure none are missing

After the discovery that Iraq had a secret nuclear weapons program in 1991 — despite being under IAEA safeguards — the agency gained enhanced authority through the Additional Protocol (1997). This gives inspectors broader access, including the ability to visit undeclared sites on short notice. However, the Additional Protocol is voluntary and not all states have adopted it.

The IAEA: Nuclear Watchdog | Model Diplomat