It has always been a mystery how Jacob Zuma, South Africa’s polygamist President, can afford to keep a roof over all those wives and his 20 children. Now taxpayers have the answer. They have unwittingly been picking up a large chunk of the £6 million bill for a series of home improvements, including a helicopter pad and a clinic at his rural home in KwaZulu-Natal. Since the genial Mr Zuma, 67, was forced to admit last year that he had fathered his 20th child with a woman who was neither one of his three wives nor a fiancée, his ostentatious...