U.S. Secretary of Defense Leon Panetta (R) participates in a wreath-laying ceremony at the North Africa American Cemetery where 2,841 U.S. soldiers killed in World War II are buried, in Tunis July 30, 2012. Panetta is on a five-day trip to the Middle-East with stops in Tunisia, Egypt, Israel and Jordan before returning to Washington. REUTERS/Mark Wilson/Pool (TUNISIA - Tags: POLITICS MILITARY)