International Atomic Energy Agency (IAEA) Director General Yukiya Amano addresses the media after a board of governors meeting at the IAEA headquarters in Vienna November 28, 2013. Iran has invited ... more 
International Atomic Energy Agency (IAEA) Director General Yukiya Amano addresses the media after a board of governors meeting at the IAEA headquarters in Vienna November 28, 2013. Iran has invited U.N. inspectors to visit a nuclear-related heavy water facility on December 8, their chief said on Thursday, a first concrete step under a plan to clarify concerns about Tehran's disputed nuclear programme. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS ENERGY HEADSHOT) less 
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Reuters | Photo By HEINZ-PETER BADER / REUTERS
Thu, Nov 28, 2013 9:23 AM EST