The Nuclear Suitcase — Joel Jenkins

What starts out as a simple case of economic espionage for Fritz and Sly Gantlet turns into a deadly game. Forced into an uneasy alliance with the CIA, the five Gantlet brothers must help stop a rogue Russian general from finding and activating a series of nuclear devices hidden in suitcases at "dead drop" sites throughout the United States. Worse still, behind the plot is the Gantlet's most fearsome foe, a former East German border guard who is bent on revenge against the brothers. For Fritz, Sly, Matthias, Mitz and Otto this is one game that they cannot afford to lose--because every life in the Western world is a pawn.