Irish Examiner view: Cruel lesson we forget at our peril

Nazi German Foreign Minister Joachim von Ribbentrop, right, leans in front of Rudolf Hess, Adolf Hitler's deputy, to confer with his lawyer, lower left, while Hermann Goering, centre, chief of the German Air Force and one of Hitler's clostest aides, turns to talk with Karl Doenitz, rear right, during a Nueremberg war crime trial session.