One of the most cogent and respected strategic theorists in today's military sounds the alarm: We have no viable doctrine for tomorrow's war.The advent of the information age renders the hallowed Principles of War useless. Forged in agrarian times and honed by the more modern conflicts of the industrial age, the principles that have guided generations of America's military leaders have become dangerously outmoded. In this, his latest book, Lt. Col. Robert R. Leonhard, author of the influential Art of Maneuver and Fighting by Minutes, proposes a new set of principles, indeed a new approach to armed conflict.