U.S. President Barack Obama (L) and Kenya's President Uhuru Kenyatta (R) depart the stage after speaking at the Global Entrepreneurship Summit at the United Nations compound in Nairobi July 25, 2015. Obama told African entrepreneurs in Kenya on Saturday they could help counter violent ideologies and drive growth in Africa, and said governments had to help by ensuring the rule of law was upheld and by tackling corruption. REUTERS/Jonathan Ernst