Title: Just and Unjust Wars
Content:  Just and Unjust Wars: A Moral Argument with Historical Illustrations is a 1977 book by the philosopher Michael Walzer. Published by Basic Books, it is still in print, now as part of the Basic Books Classics Series. A second edition was published in 1992, a third edition in 2000, a fourth edition in 2006, and a fifth edition in 2015. The book resulted from Walzer's reflections on the Vietnam War.
Title: Just and Unjust Wars
Content:  Just and Unjust Wars has, together with Spheres of Justice (1983) and Interpretation and Social Criticism (1987), been identified as one of Walzer's most important works by the philosopher Will Kymlicka in The Oxford Companion to Philosophy (2005). The work is considered a standard in the philosophical literature on the ethics of warfare, with the Stanford Encyclopedia of Philosophy calling Just and Unjust Wars "the major contemporary statement of just war theory."
Title: Just war theory
Content:  Cambridge University Press, 2003). ; Ramsey, Paul. The Just War (New York: Scribners, 1969). ; Steinhoff, Uwe. On the Ethics of War and Terrorism (Oxford, Oxford University Press, 2007). Covers the basics and some of the most controversial current debates. ; v. Starck, Christian (Ed.). Kann es heute noch gerechte Kriege geben? (Göttingen: Wallstein-Verlag, 2008). ISBN: 9783835302617 ; Walzer, Michael. Just and Unjust Wars: A Moral Argument with Historical Illustrations, 4th ed. (New York: Basic Books, 1977). ISBN: 0-465-03707-0 ; Walzer, Michael. Arguing about War, (London: Yale University Press, 2004). ISBN: 978-0-300-10978-8 Walzer, Michael. Arguing about War, (London: Yale University Press, 2004). ISBN: 978-0-300-10978-8 
Title: Just and Unjust Wars
Content:  Walzer draws on medieval Just War theory to explore the reasons that can justify war jus ad bellum and the ethical limits on the conduct of war jus in bello in an attempt to work out a modern, secular theory of just war.
Title: Al Jihad fil Islam
Content:  A major part of the book deals with the comparative study of the concept of a just war in various theologies. This book covers various important events of World War I in great detail and provides a critical analysis of the conflict and post conflict development of international accords with respect to war.
Title: Just war theory
Content: St. Augustine of Hippo (354–430) ; Alexander of Hales (1185–1245) ; Stanisław of Skarbimierz (1360–1431), author of  "About Just War" (De bellis justis), and Paweł Włodkowic (1370–1435) in the dispute between the Kingdom of Poland and the Teutonic Knights during the Council of Constance. ; Hugh O'Reilly (Archbishop of Armagh) (1580–1653) ; Meher Baba (1894–1969) ; James Turner Johnson (1938–) ; David Luban (1949–) ; John Kelsay (1953–) ; Nicholas Rennger (1959–) ; Anthony F. Lang Jr. (1968–) ; Alex J. Bellamy (1975–) ; Daniel Brunstetter (1976–) ; Cian O'Driscoll ; Valerie Morkevicius (1978–) ; James Pattison (1980–) These theorists either approve of war as retaliation, or of war as a last resort. 
Title: Spheres of Justice
Content:  Spheres of Justice has, together with Just and Unjust Wars (1977) and Interpretation and Social Criticism (1987), been identified as one of Walzer's most important works by the philosopher Will Kymlicka.
Title: John Kelsay
Content: Human Rights and the Conflict of Cultures (co-authored; University of South Carolina, 1988) ; Just War and Jihad (co-edited; Greenwood Press, 1991) ; Islam and War: A Study in Comparative Ethics (Westminster/John Knox, 1993) ; Arguing the Just War in Islam (Harvard University Press, 2007) 
Title: Karma Nabulsi
Content:  The Ethics of War: Shared Problems in Different Traditions, Aldershot: Ashgate, 2006. ; Traditions of War: Occupation, Resistance, and the Law, Oxford University Press, 2005 (paperback edition). ; The Statebuilding Process: What Went Wrong?, in M. Keating, A. Le More and R. Lowe (eds), Aid, Diplomacy and Facts on the Ground: The Case of Palestine, London: Chatham House, 2005. ; La Guerre Sainte: Debates about Just War amongst Republicans in the Nineteenth Century, in S. Hazareesingh (ed), The Jacobin Tradition in Modern France: Essays in Honour of Vincent Wright, Oxford: Oxford University Press, 2003. ; Evolving Conceptions of Civilians and Belligerents: One Hundred Years after the Hague Peace Conferences, in S. Chesterman (ed), Civilians in War, London: Lynne Rienner, 2001. ; Just War, Leve en Masse, and Jus ad Bellum Jus in Bello in Roy Gutman and David Rieff, eds., Crimes of War. New York, W.W. Norton, 1999. 
Title: Jeff McMahan (philosopher)
Content:  McMahan's main contributions to just war theory are made in his book Killing in War (OUP, 2009), which argues against foundational elements of the traditional theory of the just war theory. Against Michael Walzer, he claims that those who fight an unjust war can never meet the requirements of jus in bello.

Question: Who is the author of Just and Unjust Wars?
Answer: Michael Walzer.
Michael Laban Walzer.