In his annual presidential address on 8 January 1986, ANC president Oliver Tambo called on South Africans to make apartheid ungovernable through armed action and militant struggle. But unknown to the world, on that very day, the quiet-spoken mathematics teacher and aspirant priest turned reluctant revolutionary had also set up a secret think tank in Lusaka, which he named the Constitution Committee, giving it an 'ad hoc unique exercise' that had 'no...