The day before the report of the U.S. Central Intelligence Agency was published in the USA. It is explicitly mentioned in the report that Iran hasn't been working at any nuclear program since 2003. Meanwhile the authors of the document emphasize that the Islamic Republic of Iran continues uranium enrichment, so it can enquire nuclear weapon from 2010 to 2015. These conclusions differ from those reached two years ago, when the American special services believed that Tehran was rather determined about its nuclear program and continued its realization.