9FILES) This picture taken on July 16, 1996 shows French President Jacques Chirac (L) and Omar Bongo, President of Gabon, touring Libreville in a official Rolls-Royce car during Chirac's two-day visit to Gabon. Africa's longest-serving ruler, Gabon President Omar Bongo Ondimba, who was being treated for an illness in a Spanish clinic, has died aged 73, a French government source said on June 7, 2009. Getty Images logo Getty Images 6 months ago

9FILES) This picture taken on July 16, 1996 shows French President Jacques Chirac (L) and Omar Bongo, President of Gabon, touring Libreville in a official Rolls-Royce car during Chirac's two-day visit to Gabon. Africa's longest-serving ruler, Gabon President Omar Bongo Ondimba, who was being treated for an illness in a Spanish clinic, has died aged 73, a French government source said on June 7, 2009.