for intervening in nature to alleviate the suffering of wild animals when doing so would not cause more harm than good. Just war theory 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 basis of just war theory. Against Michael Walzer, he claims that those who fight an unjust war can never meet the requirements of jus in bello. Other work McMahan has also co-edited the books The Morality of Nationalism (with Robert McKim, OUP, 1997) and Ethics and Humanity (with Ann Davis and Richard Keshen, OUP, 2010). In the early 1980s, he wrote two books about the political situation at the time: British Nuclear Weapons: For and Against (London: Junction Books, 1981, with a preface by Bernard Williams) and Reagan and the World: Imperial Policy in the New Cold War (London: Pluto Press, 1984). In more recent times, he has also done work on effective altruism. He is on the editorial board of The Journal of Controversial Ideas. Selected publications Articles Books The Ethics of Killing: Problems at the Margins of Life (Oxford University Press, 2002) () Killing in War (Oxford University Press, 2009) () The Ethics of Killing: Self-Defense, War, and Punishment (Oxford University Press, 2020) () See also American philosophy List of American philosophers References External links Unjust War in Iraq. The Pelican Record XLI, no. 5 (December 2004): 21-33. Introduction to the work of Jeff McMahan. By Lucia Sommer. Jeff McMahan on Killing in War. An interview for Philosophy Bites, November 21, 2009. 1954 births Living people 20th-century American philosophers 21st-century American philosophers Alumni of Corpus Christi College, Oxford Alumni of St John's College, Cambridge American animal welfare scholars American ethicists Animal ethicists American political philosophers Bioethicists Sewanee: The University of the South alumni White's Professors of Moral Philosophy