Leaders, from left to right in the front row, Bolivia's President Evo Morales, Brazil's President Dilma Rousseff, Argentina's President Cristina Fernandez, Uruguay's President Jose Mujica, Chile's President Sebastian Pinera, pose for a group photo with, back row left to right, Colombia's Foreign Minister Maria Holguin, Suriname's President Desi Bouterse, Ecuador's President Rafael Correa, Peru's President Ollanta Humala, and Venezuela's Foreign Minister Nicolas Maduro at a meeting by the Union of South American Nations (UNASUR) in Mendoza, Argentina, Friday, June 29, 2012. (AP Photo/Natacha Pisarenko)
