Mandela served 27 years in prison, split between Robben Island, Pollsmoor Prison, and Victor Verster Prison. Amid growing domestic and international pressure, and with fears of a racial civil war, President F. W. de Klerk released him in 1990.
Mandela was a controversial figure for much of his life. Although critics on the right denounced him as a communist terrorist and those on the far-left deemed him too eager to negotiate and reconcile with apartheid's supporters, he gained international acclaim for his activism.