FILE PHOTO: Arthur Sadoun, CEO of Publicis Groupe, attends a conference at the Cannes Lions International Festival of Creativity, in Cannes, France, June 19, 2018. REUTERS/Eric Gaillard
FILE PHOTO: Arthur Sadoun, CEO of Publicis Groupe, attends a conference at the Cannes Lions International Festival of Creativity, in Cannes, France, June 19, 2018. REUTERS/Eric Gaillard