The main aim of this book is to argue that the use of private force by states has been restricted by a norm against mercenary use. The book traces the evolution of this norm, from mercenaries in medieval Europe through to private security companies in modern day Iraq, telling a story about how the mercenaries of yesterday have evolved into those of today in the process.
The norm against mercenaries has two components. First, mercenaries are considered to be immoral because they use force outside legitimate, authoritative control. Second, mercenaries are considered to be morally...

Traditional security distinctions are being rapidly eroded. Lines drawn between war and crime are blurring with fateful consequences for divisions between militaries and police forces. The assumption that security should be a publicly provided good has been challenged by private security providers, both domestic and international. Security is no longer (if it ever was) divided between what goes on inside one state and what occurs between states. However, our disciplinary tools for examining these security challenges remain resolutely focused on either the domestic or the international. This...