Nelson Mandela and former United Nations Secretary General Kofi Annan arrive together at the 5th Nelson Mandela Annual Lecture, held at the Linder Auditorium in Johannesburg, South Africa, Sunday, July 22, 2007. Annan, one of the world's most celebrated diplomats and a charismatic symbol of the United Nations who rose through its ranks to become the first black African secretary-general, has died. He was 80. (AP Photo, File)