TEHRAN, IRAN - APRIL 8:  Iranian President Mahmoud Ahmadinejad (C) visits the Natanz uranium enrichment facilities April 8, 2008 200 miles (322 km) south of the Tehran, Iran. Ahmadinejad announced on Iranian state television during the visit that Iran has begun the installation of some 6,000 new centrifuges, adding to to the 3,000 centrifuges already at the facility.  (Photo by the Office of the Presidency of the Islamic Republic of Iran via Getty Images)