This book examines one of the most emblematic cases of lawfare today: the criminal prosecution of former Brazilian President Lula. The authors argue that lawfare is not just a slogan or a game at the service of any one political ideology. Rather, it has to do with a complex, multifaceted phenomenon that should be carefully reflected upon in modern constitutional democracies, given that it is able to demolish majority rule and the rule of law. They contend it is the strategic use of the law with the purpose of delegitimizing, harming or annihilating an enemy. The literature specializing in the subject tends to alternate between analysis of only one aspect of the phenomenon or consists of extensive case studies. In order to fill this gap, this book revisits the subject and offers a sophisticated theoretical approach to lawfare, in an unprecedented combination of theory of war and theory of law. The book will be of interest to students, researchers and policy makers working in the areas of public law, international law, procedural law, anthropology of law and sociology of law, as well as political science and international relations.