In May 1963, leaders of 32 newly-independent African nations came together for the first time in the Ethiopian capital Addis Ababa. At stake was the dream of a united Africa. Alex Last spoke to Dr Bereket Habte Selassie who took part in that first gathering.Photo: Ethiopian Emperor Haile Selassie (C) and Ghana's first President Kwame Nkrumah (L) during the formation of the Organization of African Unity in Addis Ababa in May 1963. Credit: STR/AFP/Getty Images