Iran's nuclear chief Ali Akbar Salehi has said the head of a UN watchdog agency made a dangerous mistake by criticising Tehran for not fully cooperating. Yukiya Amano, the head of the International Atomic Energy Agency, said on Tuesday he cannot confirm that all of Iran's nuclear activities are peaceful, as Tehran claims, because the country has offered only selective cooperation to the UN nuclear watchdog and has rejected several inspectors. In blunt remarks, Amano suggested that it is still not clear whether Iran is developing nuclear weapons because the country continues to stonewall an IAEA probe. Salehi reiterated Iran's right to choose inspectors. Iran has rejected two inspectors, accusing them of leaking information on the country's nuclear programme. The IAEA,however, has insisted on reinstating them.