President Obama (right) shakes hands with Afghan President Hamid Karzai during their meeting at the NATO summit in Chicago on Sunday, May 20, 2012. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

President Obama (right) shakes hands with Afghan President Hamid Karzai during their meeting at the NATO summit in Chicago on Sunday, May 20, 2012. (AP Photo/Pablo Martinez Monsivais)