Irreconcilable Disagreement

John Rawls’s articulation of what makes for justice in war includes one of his most interesting, yet least discussed, assessments of religion and state coercion. Rawls claims that “the duties of the statesman in political liberalism” are incompatible with adherence to “the Catholic doctrine of double effect” when that doctrine precludes the deliberate targeting of innocent and harmless human beings in a “supreme emergency.” I explicate Rawls’s argument in favor of that claim, articulate various theological objections, and assess some proposed restrictions on the justificatory role of religious reasons in the light of that disagreement.