President Obama pauses during a town hall meeting with young African leaders at the University of Johannesburg Soweto on Saturday, June 29, 2013, in Johannesburg, South Africa. (AP Photo/Evan Vucci)

Photo by: Evan Vucci

President Obama pauses during a town hall meeting with young African leaders at the University of Johannesburg Soweto on Saturday, June 29, 2013, in Johannesburg, South Africa. (AP Photo/Evan Vucci)