This piece on Obama tripping to Africa is a more pointed article than anything I've seen in newspaper. And gives a good explanation of BRICS participanting nations on the African continent.
Evidently the Obama Administration feels it was necessary to implement a Counter Insurgency Force to protect the President and his entourage from insurgent African animals! Sheesh.
But even this article does not answer my question: "What are the odds that Obama would be in Africa with Mandela so ill?" I mean, it would be a PR meister's illusionist IMAGE-MAKING dream-come-true to visually/perceptually give the appearance that 'the baton' (so to speak) passed from Mandela to Obama. Very odd, imo.