After Nelson Mandela died on 5 December, Tory prime minister David Cameron was full of praise for Mandela. Full of hypocrisy, too. In 1989, when Mandela was still in jail under the apartheid regime, Cameron went on an all-expenses-paid trip to South Africa, organised and funded by Strategy Network Internation (SNI), a group created in 1985 specifically to lobby against the imposition of sanctions on the apartheid government. Asked about the trip by the authors of a book on Cameron about the trip, Alistair Cooke, who was Cameron's boss when he worked in 1989 at Tory Central Office, was "simply...