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Members of Iran's paramilitary Basij militia parade in front the former US embassy in Tehran on November 25, 2011 to mark the national Basij week. Iran has dismissed a US news report implicating it in a chemical weapons cache uncovered in Libya, saying it was a champion in fighting to eradicate such arms. AFP PHOTO/ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)

Members of Iran's paramilitary Basij militia parade in front the former US embassy in Tehran on November 25, 2011 to mark the national Basij week.  Iran has dismissed a US news report implicating it in a chemical weapons cache uncovered in Libya, saying it was a champion in fighting to eradicate such arms. AFP PHOTO/ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)