U.S. Secretary of State John Kerry listens as Ghana's President John Dramani Mahama delivers remarks at the Ghana Compact Signing Ceremony at the U.S. Department of State in Washington, D.C., on August 5, 2014. Leaders from across the African continent are in the nation's capital for a three-day U.S.-Africa Leaders Summit, the largest event any U.S. President has held with African heads of state and government.