Public appearances like the one at the London rock concert in honour of his birthday are rare these days for the anti-apartheid icon. Mandela jokes he has ``retired from retirement,`` but this time it sounds serious. The tall, majestic figure the world saw walking out of prison to freedom 18 years ago is now grey-haired, frail and for the most part silent as he reaches his 90th birthday on Friday.
Image: In this December 9, 1993 file photo, the two Nobel Peace Prize winners, ANC President Nelson Mandela, left, and South African President Frederik Willem de Klerk, shake hands during their meeting in Oslo.
Copyright AP. Any unauthorised reproduction is prohibited