(FILES) A file picture taken on January 21, 1963 in Paris, shows French President General Charles de Gaulle (R) and German Chancellor Konrad Adenauer (L) during a meeting a day prior to sign the French-German cooperation treaty at the Elysee Palace. German Chancellor Angela Merkel and French President Francois Hollande will celebrate the 50th anniversary of the German-French friendship-contract on July 9, 2012 in Reims. AFP PHOTO