For the last two and a half decades--through war, oil crises, and global terrorism--the United States and Saudi Arabia have had a very special relationship, thanks in no small part to one man: Prince Bandar bin Sultan. The illegitimate son of a Saudi prince and a servant girl, he used his vital behind-the-scenes influence to convince Gorbachev to withdraw the Soviet military from Afghanistan and helped President Reagan and CIA Director William Casey to win the Cold War with Saudi petrodollars. A Machiavellian manipulator, he negotiated an end to the Iran-Iraq war and played a key role in...