U.N. goodwill ambassador actress Angelina Jolie signs autographs as she visits with soldiers of the 1st Cavalry, Multi-National Division - Baghdad during her visit to the MND-B headquarters on Camp Liberty, July 23, 2009.Jolie, on her third trip to Iraq in two years, appealed on Thursday for aid to an estimated 1.6 million civilians who remain uprooted in their homeland.(Xinhua/Reuters Photo)