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A Challenge to the Reigning Theory of the Just War

2011, International Affairs

Abstract
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The paper critiques the Reigning Theory of Just War, highlighting its moral inadequacies and the tendency of its proponents to justify unjustified killings during armed conflict. It discusses various moral traditions related to war, including pacifism and political realism, ultimately arguing that the conventional principles surrounding the justification of war are fundamentally flawed. The author references Jeff McMahan's work, emphasizing the need for a more robust moral framework that accurately reflects the moral implications of war.

Key takeaways

  • McMahan argues not only that the Reigning Theory lacks a plausible moral basis (and should therefore be rejected as a fundamental moral criterion for assessing war) but that the Reigning Theory is flawed in ways that seem likely to lead even its sincere adherents to engage in morally unjustified killing (and thus is not the type of public moral criterion we would want ordinary people, soldiers, and statesmen to appeal to in deciding whether to resort to war, and how to fight them.)
  • Although much of Killing in War is devoted to a critique of the Reigning Theory, its fundamental aim is constructive: to propose an alternative account of the morality of armed conflict, focussing in particular on a conception of liability to attack, and to indicate ways of incorporating more plausible moral views about armed conflict into policy.
  • Unless they fight by wrongful means, just combatants do nothing to make themselves morally liable to attack.
  • The requirement that liability must be tied to posing an objectively unjust threat of harm distinguishes this account from the Reigning Theory: just combatants who fight by just means are not morally responsible for objectively unjust threats (and so are not liable to attack), while some civilians on the unjust side are morally responsible for such threats (and thus may be liable to attack).
  • In particular, Lazar argues that there is no basis on which McMahan can safely claim that most unjust combatants are liable to attack (pp.184-5) but that most unjust noncombatants (civilians who are members of the community that is conducting an unjust war) are not (pp.225, 231).