Complex sentence: Its news editor is Pascal Riché, former Op-ed editor of "Libération", and its chief editor and president of the society "Rue 89" is Pierre Haski, former deputy editor of "Libération".
Split into simpler sentences: Its news editor is Pascal Riché, former Op-ed editor of "Libération", and its chief editor. The president of the society "Rue 89" is Pierre Haski, the former deputy editor of "Libération".