Les Moonves resigns from CBS September 10, 2018 1133 Mandatory Credit: Photo by Chelsea Lauren/Variety/REX/Shutterstock (9473675bi) Leslie Moonves The Simon Wiesenthal Center 2018 National Tribute Dinner, Inside, Los Angeles, USA - 22 Mar 2018 The head of US media giant CBS, Les Moonves, has resigned with immediate effect after allegations of sexual misconduct.