Shugaba Obama yana ziyara a Afirika Ta Kudu

Nelson Mandela's cell during President Obama's visit to Robben Island prison in South Africa.

Audince during President Obama's visit to Robben Island prison in South Africa.

President Obama signing guest book at Robben Island prison in South Africa.

U.S. President Barack Obama participates in a town hall-style meeting with young African leaders at the University of Johannesburg Soweto, June 29, 2013.

U.S. President Barack Obama holds a town hall meeting in Soweto Township, near Johannesburg June 29, 2013.

Demonstrators move back as police attempt to disperse a protest outside the University of Johannesburg in Soweto, ahead of a visit by U.S. President Barack Obama, June 29, 2013.

Protesters argue with police outside the University of Johannesburg in Soweto, ahead of a visit by U.S. President Barack Obama, June 29, 2013.

Police attempt to disperse protesters outside the University of Johannesburg in Soweto, ahead of a visit by U.S. President Barack Obama, June 29, 2013.

U.S. President Barack Obama greets the public as he arrives at a town hall meeting with young African leaders at the University of Johannesburg..

U.S. President Barack Obama gestures during a news conference with South African President Jacob Zuma.

U.S. President Barack Obama flanked by First Lady Michelle Obama, left, waves with South African President Jacob Zuma.

U.S. President Barack Obama shakes hands with South Africa's President Jacob Zuma during their meeting at the Union Buildings in Pretoria, June 29, 2013.

U.S. President Barack Obama and South African President Jacob Zuma address a press conference following their meeting at Union Building in Pretoria, South Africa, June 29, 2013.

President Barack Obama and first lady Michelle Obama arrive at Waterkloof Air Base in Centurion, South Africa, June 28, 2013.

U.S. President Barack Obama arrives at Waterkloof Air Base in South Africa, June 28, 2013.