Fereidoun Abbasi (C), Head of Iran's Atomic Energy Organization, Gen. Mohammad Ali Jafari (R), the chief of the Iran's Revolutionary Guard, and Ahmad Reza Pourdastan, Iran's Army commander, attend a conference commemorating Iranian government officials who have been assassinated since the 1979 Islamic Revolution, in Tehran, Iran, Tuesday, Sept. 6, 2011. UPI/Maryam Rahmanian