President And Mrs. Obama Host White House Dinner For US-Africa Leaders Summit

WASHINGTON, DC - AUGUST 05: Mauritania President Mohamed Aziz and his wife Mariam Mint Ahmed Dit Tekber arrive at the North Portico of the White House for a State Dinner on the occasion of the U.S. Africa Leaders Summit, August 5, 2014 in Washington, DC. African leaders are attending a three-day-long summit in Washington to strengthen ties between the United States and African nations. (Photo by Mark Wilson/Getty Images)