The chief UN nuclear inspector says it remains possible that Iran is hiding secret nuclear activities.
Mohamed ElBaradei says it is impossible to guarantee that Iran is not hiding secret activities unless it allows his inspectors much broader access and answers allegations that it hid past attempts to make nuclear arms.
ElBaradei is head of the International Atomic Energy Agency. He spoke Monday at the opening of the 35-nation IAEA board of governors.
Iran is under three sets of UN Security Council sanctions for refusing to freeze uranium enrichment. While Tehran says it only wants to generate nuclear fuel, there is fear it could use the process to create the fissile core of nuclear warheads.