Afghanistan's Minister of Defense Abdul Rahim Wardak (R) watches as U.S. Defense Secretary Leon Panetta signs a guest book prior to a meeting in Kabul March 14, 2012. Panetta told troops in Afghanistan on Wednesday that the massacre of 16 Afghan civilians by an American soldier should not deter them from their mission to secure the country ahead of a 2014 NATO withdrawal deadline. REUTERS/Scott Olson/Pool (AFGHANISTAN - Tags: POLITICS MILITARY)