Kofi Annan, Former UN Secretary-General, Dies at 80

The United Nations flag flies at half staff in honor of former Secretary-General Kofi Annan at U.N. headquarters, Saturday, Aug. 18, 2018. 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. [Photo: AP/Mary Altaffer]