‘Naomi Head has producedan original and compelling argument that brings practice back to the CriticalTheory of Habermas, rebutting claims that it has little to say aboutcontemporary moral and ethical debates. She pushes constructivism beyond theanalysis of norms to an examination of how to better engage in communicativeethics and nudges debates about good international citizenship or theResponsibility to Protect toward the importance of procedural legitimacy indecisionsmaking about the use of force. Through an examination of NATO's'legitimate' but 'illegal' intervention in Kosovo, she reveals the processes ofexclusion from dialogue, the lack of policy coherence and the missedopportunities for a peaceful settlement. In response to the continuing sceptismabout the role of language at the international level, she shows why legitimacyand justification matter. This excellent book should be required reading notonly for scholars but policymakers confronted with life and death decisionsabout the use of force.’ Professor K.M. Fierke, School of International Relations, St.Andrews