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