<p>Two men possess vital information on Russia's Star Wars missile defense system.</p> <p>One of them is Cardinal -- America's highest agent in the Kremlin -- and he's about to be terminated by the KGB.</p> <p>The other one is the American who can save Cardinal and lead the world to the brink of peace . . . or war.</p> <p>Here is author Tom Clancy's heart-stopping masterpiece -- a riveting novel about one of the most intriguing issues of our time.</p>