George Clooney has claimed that France should return the Mona Lisa to Italy during a promotional tour for his new film The Monuments Men, according to the Hollywood Reporter. The comments, which follow Clooney's repeated claims over the past week that Britain should return the Parthenon marbles to Greece, were reportedly made in Milan at a press event during which the film's cast posed in front of the famed Leonardo da Vinci masterpiece The Last Supper. The film's director was joined by co-stars Matt Damon, Bill Murray, Bob Balaban, Jean Dujardin and John Goodman for the event.