Debt of Honor by Tom Clancy

Jack Ryan, now the President's National Security Adviser, finds himself embroiled in the buildup to a new world war-one in which the stock market and national economic policy are as critical as advanced weaponry. A power-hungry Japanese financier, still blaming America for his parents' deaths in WWII, plans to use his immense wealth to purchase his revenge. A fatal auto accident in the U.S., caused by faulty gas tanks in two Japanese cars, leads to the breakdown of U.S.-Japanese trade agreements. Spies track each other; nuclear weapons are built and hidden; Ryan and an assortment of his old colleagues maneuver ships, planes and spies into harm's way. As always, the author of Patriot Games and Clear and Present Danger spins out story threads in a rich but bewildering tangle of plot and setting, then vigorously weaves them together. Here, the heart-stopping climax is unexpected, but oddly appropriate.