Former South African president Thabo Mbeki looks on during the first Global Anti Apartheid Conference in Sandton last year. (Emmanuel Crosete/AFP/Getty Images) By Donald G. McNeil Jr. Donald G.

THABO Mbeki, who succeeded Nelson Mandela to become ... that about 300 cases be pursued when it finished its work in the early 2000s. There have only been a handful of prosecutions since.