TOPSHOTS US President Barack Obama laughs at the hair nets the members of the press have to wear during a tour of Faffa Food, which produces low-cost and high-protein foods, with the help of Feed the Future in Addis Ababa on July 28, 2015. Feed the Future, Obama's global hunger and food security initiative, invests in agriculture to spur economic growth and reduce poverty and hunger. Barack Obama will be the first-ever US president to address the African Union today, in the culmination of a short tour of the region that has seen him focus on security and human rights. AFP PHOTO / SAUL LOEB