On December 16th, 1965 (the then Dingane's Day), Pieter Botha, as Defence Minister in the South African White minority government, announced loudly that South Africa possessed a 'secret weapon'.
This is about a poem called, "Epitaph for Biafra" by a Nirerian playwright and poet, Ken Saro-Wiwa. The poem is part of the collection entitled "Songs in a Time of War", which largely about the Nigeria Civil War.