Here's a textbook example of how to handle a potentially difficult interview. Peter Mandelson performed quite brilliantly on the Andrew Marr programme on Sunday morning. From the outset he was in complete control of the interview, setting the mood and the pace. Andrew Marr is a fine interviewer and the subject matter provided much scope for confrontation, but Mandelson was controlled, precise and unflappable throughout. His use of language is forensic and he does a great job of setting the pace, asserting his right to control the length of his answers and of deflecting those questions that he chooses not to answer. A classic.