Book excerpt: Surveying the period from the rise of Islam in the early seventh century to the present day, Just Wars, Holy Wars, and Jihads is the first book to investigate in depth the historical interaction among Jewish, Christian, and Muslim ideas about when the use of force is justified. Grouped under the three labels of just war, holy war, and jihad, these ideas are explored throughout twenty chapters that cover wide-ranging topics from the impact of the early Islamic conquests upon Byzantine, Syriac, and Muslim thinking on justified war to analyzing the impact of international law and terrorism on conceptions of just war and jihad in the modern day. This study serves as a major contribution to the comparative study of the ethics of war and peace.