“I’ve been searching a long time for a text like this. Christensen has written an exceptionally clear, careful, and engaging introduction to some of the most important moral and epistemological issues that arise when we think critically about the practice of war, the pursuit of peace and—most generally—the culture of violence within which our lives are embedded. I was especially pleased to see that Christensen makes extensive use of Peace Studies, and that he spends many pages exploring the philosophical foundations of that discipline. It’s both rare and encouraging to see a philosopher grapple seriously with such challenging and fertile topics as positive peace, ahimsa (nonviolence), institutional violence, pacifism, peacebuilding and peace activism.” — Mark Vorobej, Associate Professor of Philosophy and former Director of the Centre for Peace Studies, McMaster University