Excellent article by Andreas Whittam Smith in today's Indie does just what a columnist ought to do. He decodes David Cameron, gets a shattering blow in at Tony Blair, exposes in a calm and succinct way how spin has corrupted politics, sets out two questions that need to be answered if parliamentary authority is to be restored (it won't be) and establishes an intelligent base from which to judge what is going on, without an exaggerated word or a false note.