World Leaders Take Part In NATO Summit In Chicago

CHICAGO, IL - MAY 20: U.S. President Barack Obama (C) and NATO Secretary General Anders Fogh Rasmussen (2ndR) wave during the family photo under the Soldier Field colonnades at the NATO Summit on May 20, 2012 in Chicago, Illinois. As sixty heads of state converge for the two day summit that will address the situation in Afghanistan, among other global defense issues, thousands of demonstrators have taken to the streets to protest. (Photo by Kevork Djansezian/Getty Images)