Audiobook Title:
Debt of Honor
By: Tom Clancy

Called out of retirement to serve as the new president's National Security Advisor, Jack Ryan quickly realizes that the problems of peace are fully as complex as those of war. Enemies have become friends, friends enemies, and even the form of conflict has changed. What he cannot realize, however, is just how close the next conflict is. And when one of those new enemies readies a strike not only at America's territory, but at the heart of her economy, it is Ryan who must prepare an untested president to meet the challenge. For there is a debt of honor to be paid - and the price will be terrifyingly high.