It was a moment both remarkable and uncomfortable. There, on the night of November 21, was Bob Woodward looking nervous and dry-mouthed, trying to defend his hard-earned legacy to – of all people – a suddenly aggressive and sharp-elbowed Larry King. "So it’s quid pro quo," said the cable schmooze-meister to his old pal Woodward, snappily summing up the reporter’s symbiotic relationships with his...