Herman Nackaerts, deputy director general and head of the Department of Safeguards of the International Atomic Energy Agency (IAEA), waves as he arrives from Iran at Schwechat Airport in Vienna, Austria, on Dec. 14, 2012. (Associated Press)

Photo by: Ronald Zak

Herman Nackaerts, deputy director general and head of the Department of Safeguards of the International Atomic Energy Agency (IAEA), waves as he arrives from Iran at Schwechat Airport in Vienna, Austria, on Dec. 14, 2012. (Associated Press)