Iran President Mahmoud Ahmadinejad, right, shakes hands with Nigeria's President Goodluck Ebele Jonathan, left, before the group photo at the United Nations Conference on Sustainable Development, or ... more 
Iran President Mahmoud Ahmadinejad, right, shakes hands with Nigeria's President Goodluck Ebele Jonathan, left, before the group photo at the United Nations Conference on Sustainable Development, or Rio+20, in Rio de Janeiro, Brazil, Wednesday, June 20, 2012. The Earth summit runs through June 22. (AP Photo/Victor R. Caivano) less 
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Associated Press | Photo By Victor R. Caivano
Thu, Jun 21, 2012 2:06 PM EDT