Wow! If you have any interest at all in what makes history and in spies and conspiracies and intelligence gathering through the ages, this book is for you. Thesis: that the best generals only succeed through great Intelligence. You want the truth about Washington, Lincoln, Napoleon and Bismarck's success, about the Cold War, not to mention World Wars I and II? Read this book. The author grasps what is really interesting and adds his own (prejudiced, but entertaining) comments. Teachers of history, both American and World, ought to add the author's stories of the underside of history to their repertoires, because these telling details add interest and also balance and humanity to the sweep of cause and effect that makes up the events that shape our world.