Elsa Keslassy International CorrespondentThe Cannes Film Festival has added a string of new titles to its Official Selection, including three movies in competition: Léonor Serraille’s “Un Petit Frere,” Albert Serra’s “Tourment sur les iles” and “The Eight Mountains” by Charlotte Vandermeersch and Felix Van Groeningen (“The Broken Circle Breakdown”).“The Eight Mountains” is an Italian film based on Paolo Cognetti’s 2016 novel. It revolves around a young man who returns to a young man who finds refuge in the Italian village where he spent a summer as a child with his parents.