Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Iran Using Advanced Centrifuges, Violating Nuclear Deal Associated Press TEHRAN, IRAN - Iran has begun using an array of advanced centrifuges to enrich uranium in violation of its 2015 nuclear deal, a spokesman said Saturday, warning that Europe has little time left to offer new terms to save the accord. The comments by Behrouz Kamalvandi of the Atomic Energy Organization of Iran signal a further cut into the one year experts estimate Tehran would need to have a enough material for building a nuclear weapon if it chose to pursue one. Iran maintains its program is peaceful. .