Watch part two
On Friday, Barack Obama, the US president, begins his first official visit to Africa.
But, does Africa expect too much from the first African-American US president?On Wednesday's Riz Khan we look at US policy in the continent. Will his approach differ to that of his predecessors and what will happen to the United States Africa Command (AFRICOM) which was created in 2007 but is still looking for a host country on the continent?
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