Jihad, with its many terrifying associations, is a term widely used today, though its meaning is poorly grasped. Few people understand the circumstances requiring a jihad, or "holy" war, or how Islamic militants justify their violent actions within the framework of the religious tradition of Islam. How Islam, with more than one billion followers, interprets jihad and establishes its precepts has become a critical issue for both the Muslim and the non-Muslim world.

John Kelsay's timely and important work focuses on jihad of the sword in Islamic thought, history, and culture. Making use of original sources, Kelsay delves into the tradition of shari'a--Islamic jurisprudence and reasoning--and shows how it defines jihad as the Islamic analogue of the Western "just" war. He traces the arguments of thinkers over the centuries who have debated the legitimacy of war through appeals to shari'a reasoning. He brings us up to the present and demonstrates how contemporary Muslims across the political spectrum continue this quest for a realistic ethics of war within the Islamic tradition.

Arguing the Just War in Islam provides a systematic account of how Islam's central texts interpret jihad, guiding us through the historical precedents and Qur'anic sources upon which today's claims to doctrinal truth and legitimate authority are made. In illuminating the broad spectrum of Islam's moral considerations of the just war, Kelsay helps Muslims and non-Muslims alike make sense of the possibilities for future war and peace.

The just war tradition is central to the practice of international relations, in questions of war, peace, and the conduct of war in the contemporary world, but surprisingly few scholars have questioned the authority of the tradition as a source of moral guidance for modern statecraft. Just War: Authority, Tradition, and Practice brings together many of the most important contemporary writers on just war to consider questions of authority surrounding the just war tradition.

Authority is critical in two key senses. First, it is central to framing the ethical debate about the justice or injustice of war, raising questions about the universality of just war and the tradition’s relationship to religion, law, and democracy. Second, who has the legitimate authority to make just-war claims and declare and prosecute war? Such authority has traditionally been located in the sovereign state, but non-state and supra-state claims to legitimate authority have become increasingly important over the last twenty years as the just war tradition has been used to think about multilateral military operations, terrorism, guerrilla warfare, and sub-state violence. The chapters in this collection, organized around these two dimensions, offer a compelling reassessment of the authority issue’s centrality in how we can, do, and ought to think about war in contemporary global politics.