The book is outstanding exercise in economic theory. Barzel applies the fundamentals of price theory to explain how states work, the inherent trade-offs between protection and liberty.
By giving more power to the state in order to provide protection to those under its jurisdiction, the citizens are also incurring in risks associated with the “protector” becoming a dictator for having too much power.
Nevertheless, the book is somewhat repetitive. If one reads the introduction and the conclusions at the end of each chapter, there’s no substantial loss.