PRESIDENT Nelson Mandela will attend Saturday’s inauguration of Nigeria’s new civilian president Olusegun Obasanjo, his office said on Wednesday. Mandela is to leave for Nigeria on Friday, a presidential statement said. The president had originally been scheduled to address a major election rally in the Indian Ocean city of Durban on Saturday to mark the climax of his African National Congress’s campaigning in KwaZulu-Natal province for South Africa’s June 2 general elections.