By Ian Burrell INTERVIEW PETER BARRON With the first of the star-studded '10 Days to War' shorts going out tonight, Peter Barron tells Ian Burrell why the dramas make stimulating 'hors d'oeuvres' to his 'Newsnight' P inned on the wall above the desk occupied by Peter Barron, the editor of Newsnight, hangs a conical diagram of the flagship current- affairs programme's master plan for expanding its audience.