USAID administrator Raj Shah, left, looks on as U.S. President Barack Obama, center, talks to Nimna Diayte, president of the Farmers Federation, front, during a food security expo on Friday, June 28, ... more 
USAID administrator Raj Shah, left, looks on as U.S. President Barack Obama, center, talks to Nimna Diayte, president of the Farmers Federation, front, during a food security expo on Friday, June 28, 2013, in Dakar, Senegal. Obama met with farmers, innovators, and entrepreneurs whose new methods and technologies are improving the lives of smallholder farmers throughout West Africa. (AP Photo/Evan Vucci) less 
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Associated Press | Photo By Evan Vucci
Fri, Jun 28, 2013 6:40 AM EDT