US President Barack Obama (2nd R) and Tanzanian President Jakaya Kikwete (2nd L) are flanked by US first lady Michelle Obama (R) and Tanzanian first lady Salma Kikwete (L) as they arrive at the State House in Dar es Salaam July 1, 2013. [Photo/Agencies]

US President Barack Obama and Tanzania's President Jakaya Kikwete (L) greet Tanzanians during an official welcoming ceremony in Dar Es Salaam July 1, 2013. [Photo/Agencies]