Johannesburg – President Barack Obama will make a special effort to lay the groundwork for more aid to Africa, and especially South Africa, during his short stay in Johannesburg and Cape Town.

He has arrived at a time when South Africans are preoccupied with the health of former president Nelson Mandela, who remains in critical condition in hospital.
While in Senegal, Obama said that Washington had a “moral imperative” to help the world’s poorest continent feed itself.
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