A groundbreaking reexamination of U.S. and global security, certain to be one of the most talked about books of the year. Since the end of the Cold War, America's national security establishment has been searching for a new operating theory to explain how this seemingly "chaotic" world actually works. Gone is the clash of blocs, but replaced by what? Thomas Barnett has the answers. A senior military analyst with the U.S. Naval War College, he has...