If it is indeed true that the Prime Minister effectively threatened to blackmail the Police - for that's what it amounts to - he has scarred his office. The Police, of course, should have called his bluff.
But beyond the political theatrics here, we mustn't miss the point - and the point is that the Police are clearly treating Tony Blair as a suspect in the inquiry. Downing Street keep briefing that he is being interviewed as a witness rather than a suspectm but this blows that statement apart.
What does it all mean? I suspect it means that no charges will be laid until the PM has departed ths scene. Perhaps he might now try to elongate his departure! A couple of days ago I watched Alastair Beaton's THE TRIAL OF TONY BLAIR. It no longer seems so fanciful, all of a sudden.