What ails Thabo Mbeki? Few would have expected that South Africa's president, who is regarded even by his critics as a clever man, would lose the plot, yet even fewer can believe that a genuine plot to overthrow Mr Mbeki, is or was, afoot. Last week South Africa's safety and security minister, Steve Tshwete, said the police were investigating a conspiracy against the president, and named three well-known politicians-turned-businessmen of being behind it. Mr Mbeki himself spoke of a conspiracy. But no serious evidence of anything remotely like a coup has been revealed. Does it all mean that Mr Mbeki is going off the rails?
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