A security officer stands next to a banner hung on the entrance of the Uranium Conversion Facility

 
A security officer stands next to a banner hung on the entrance of the Uranium Conversion Facility
A security officer stands next to a banner hung on the entrance of the Uranium Conversion Facility (UCF), before a ceremony to form a human chain by Iranian students showing their support for Iran's nuclear program, in Isfahan, 450 km (280 miles) south of Tehran, November 15, 2011. REUTERS/Morteza Nikoubazl
Tags: Students