African Union Commission chairperson, Dr. Nkosazana Dlamini-Zuma, right, stands with U.S. President Barack Obama as he looks up at the crowd before delivering a speech to the African Union, Tuesday, July 28, 2015, in Addis Ababa, Ethiopia. On the final day of his African trip, Obama is focusing on economic opportunities and African security. (AP Photo/Evan Vucci)
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