U.S. President Barack Obama delivers remarks on energy at Ubungo Power Plant in Dar es Salaam July 2, 2013. REUTERS/Jason Reed

 
U.S. President Barack Obama delivers remarks on energy at Ubungo Power Plant in Dar es Salaam July 2, 2013. REUTERS/Jason Reed
U.S. President Barack Obama delivers remarks on energy at Ubungo Power Plant in Dar es Salaam July 2, 2013. REUTERS/Jason Reed