AdvertisementU.N. Says Some Of Iran's Work Is 'Specific' To Nuclear WeaponsNovember 08, 2011Eyder PeraltafacebookEmailApril 2010: Iranian President Mahmoud Ahmadinejad unveils a sample of the third generation centrifuge for uranium enrichment during a ceremony in Tehran on April 9, 2010. Iran says its nuclear ambitions are peaceful. (AFP/Getty Images)