International Atomic Energy Agency has confirmed that Iran is complying with the nuclear deal it signed with six world powers last year.<br/> <br/>IAEA Director-General Yukiya Amano in an interview said Tehran had observed the deal, which was opposed by hardliners inside Iran and by sceptics in the West. <br/><br/>He said the deal is being implemented since January without any particular problem.<br/><br/>Under its July deal with the United States, Russia, China, France, Britain and Germany, Iran is allowed to have 130 tons of heavy water, a moderator in reactors like the one it has disabled at Arak.