Book excerpt: "The master of the spy novel has discovered perestroika, and the genre may never be the same again . Le Carre's latest is both brilliantly up-to-date and cheeringly hopeful in a way readers of the Smiley books could never have anticipated. Barley Blair is a down-at-heels, jazz-loving London publisher who impresses a dissident Soviet physicist during a drunken evening at a Moscow Book Fair. When the physicist attempts to have Barley publish his insider's study of the chaotic state of Soviet defense, British intelligence steps in"--Publishers Weekly.