Article Photos: Iran: Khamenei's ban on nuclear weapons binding



Herman Nackaerts, center, of the International Atomic Energy Agency, IAEA, Deputy Director General and Head of the Department of Safeguards, arrives for his flight to Iran at Vienna's Schwechat airport, Austria, Tuesday, Jan. 15, 2013. The U.N. team is embarking on a new try to restart its probe into suspicions that Iran secretly worked on nuclear arms. (AP Photo/Ronald Zak)

Herman Nackaerts, center, of the International Atomic Energy Agency, IAEA, Deputy Director General and Head of the Department of Safeguards, arrives for his flight to Iran at Vienna's Schwechat airport, Austria, Tuesday, Jan. 15, 2013. The U.N. team is embarking on a new try to restart its probe into suspicions that Iran secretly worked on nuclear arms. (AP Photo/Ronald Zak)