An accountancy practice <a href=" http://www.memories-book.co.uk/blog/writing-a-essay/#fully ">essay on cell phone use in school</a> Iran has defended its right to enrich uranium as part of a civilian nuclear energy and medicine program and denied that it aims to develop atomic weapons, but the United States and its allies have sought an end to higher-grade uranium enrichment that could be a step away from the production of weapons-grade material.