There are many business books that are quick, easy books. And there are many business books that provide specific insight into how things work. There are few who do both. This is one of those.
Michaelson scoured the world for the best translations of Sun Tzu's classic Art of War. When different translations offered different points of view or shades of meaning, he provided various examples to allow the reader the greatest amount of insight. And, unlike some translations, he manages to do this in a simple, straightforward way, without getting bogged down in the academic.
The Michaelson went a step further to discuss how each of the sections of Art of War apply to business. I will admit, I do not always see a perfect correspondence between Sun Tzu's message and Michaelson's applications; yet each is valuable of itself, and the composite result is both pleasing and useful.
Once you are aware of Sun Tzu's work, you can easily see how it applies (or could apply) to your business, your competitor's practices, accounts you read about in the newspaper, etc. The art of war in business is to position yourself to win the battle before it even starts. This book is too brief to go into detail about how to do use that in every business sector (though it does occasionally provide some concrete examples); however, if you cannot see how to apply its lessons in your particular area, you are probably not ready to lead.