Gabon's President Omar Bongo (R) shakes hands with former French President Jacques Chirac at the French-African Summit in Cannes, south-eastern France in this file photo taken February 15, 2007. Bongo, Africa's longest-serving leader, died on Monday of a heart attack in a Spanish clinic after more than four decades of tight control over the central African oil-producing nation. REUTERS/Pool/Files (FRANCE POLITICS OBITUARY)