Iran said it has enriched uranium to 4.5 percent – breaking the limit set in the 2015 nuclear deal. The UN's nuclear watchdog, the International Atomic Energy Agency, has confirmed the development. Meanwhile, a spokesperson for Iran's Atomic Energy Organization said five percent purity could be used to help meet the country's energy needs. But Tehran said it may not stop at five percent, threatening to cut deeper into the terms of the 2015 accord.