An editorial critical of Gabon President Omar Bongo, Africa's longest-serving head of state, has led authorities in capital Libreville to arrest a publisher and suspend his newspaper. Africa Union Commission Chairman Alpha Oumar Konare (left) talks with Gabon's President Omar Bongo at the 9th African Union Summit in Accra July 1, 2007. (Reuters/Luc Gnago) Guy-Christian Mavioga, director of the