【明報專訊】THE GOVERNMENT has announced that Leung Ka-wing will succeed Roy Tang Yun-kwong as Director of Broadcasting. Given the fact that Leung possesses 40 years' professional experience in journalism, we believe that no one will have any doubts about his credentials as the editor-in-chief of RTHK. But as everybody knows, RTHK serves a lot more roles and functions than ordinary media organisations do. Over the years, it has repeatedly been caught up in political controversies. There is no guarantee that an RTHK leader who has the necessary professional expertise to handle its daily operations can put the broadcaster in the right position amid all the political arguments. All the discussion in society over the role of RTHK has well illustrated this point. Leung's performance in handling politics will be the yardstick of his success in leading RTHK and carrying out his duties.