Herman Nackaerts (center), deputy director general and head of the Department of Safeguards of the International Atomic Energy Agency, is interviewed as he arrives after his flight from Iran at Vienna's Schwechat airport on Wednesday.
Despite international pressure, Iranian President Mahmoud Ahmadinejad listens to a technician during a visit to the Natanz Uranium Enrichment Facility, 200 miles south of the capital, Tehran, in 2008.
Iranian President's Office/AP
People gather around a car as it is removed by a mobile crane in Tehran, Iran. The car was being driven by Iranian nuclear scientist Mostafa Ahmadi Roshan when it was targeted by a bomb Wednesday. Roshan was killed in the blast.