This work investigates the legal legitimacy of targeted killing within the framework of international humanitarian law and human rights law. Nils Melzer, a legal scholar and former UN Special Rapporteur, examines the intersection of armed conflict and law enforcement paradigms. He provides a rigorous analysis of when, where, and against whom lethal force may be applied by states, challenging the expansion of military operations into non-traditional conflict zones.

Legal scholars and practitioners frequently cite this text as a definitive reference for understanding the complexities of lethal force in modern warfare. Readers often note the high level of academic density and the precise, technical nature of the legal arguments presented.