Head of the Atomic Energy Organization of Iran (AEOI) Fereidoun Abbasi underlined the UN nuclear watchdog\'s supervision over Iran\'s peaceful nuclear activities, adding that Iran has nothing to hide regarding its nuclear program.     \"All of our (nuclear) progresses both in the field of centrifuges and Arak atomic reactor are under the supervision of the International Atomic Energy Agency and there is nothing to hide,\" Abbasi told reporters at the end of a cabinet meeting here in Tehran on Wednesday. Reiterating the IAEA\'s full supervision and monitoring of all Iranian nuclear activities, Abbasi said the UN nuclear watchdog agency and its Director-General Yukiya Amano have presented a precise and detailed report on the enriched materials as well as the number of centrifuges in Iran. Last week, Iran\'s Residing Representative at IAEA Ali Asqar Soltaniyeh underscored that the recent report released by the agency on Iran approves the peaceful nature and transparency of the country\'s nuclear activities. \"After 10 years of the most robust inspection in the history of the IAEA, no evidence of diversion of nuclear material or nuclear activities to the prohibited purposes have been found and everything remains peaceful,\" Ambassador Ali Asqar Soltaniyeh said on Wednesday. The Iranian official made the remarks in response to a new IAEA quarterly report on Iran\'s peaceful nuclear program. Soltaniyeh stressed that IAEA inspectors\' failure to find any diversion in Iran\'s nuclear activities \"is in fact a very clear document to prove that all those allegations against Iran are forged and fabricated.\" Iran and the IAEA have so far held 10 rounds of negotiations over the Islamic Republic\'s nuclear energy program since early 2012. Tehran maintains that as a committed NPT signatory and a member of the IAEA, it has the right to use nuclear technology for peaceful purposes.