The Ethics of Modern War

Any nation," the present Pope has said, "so mad as to contemplate war would be guilty of monstrous homicide and almost certainly of suicide." There is, it would seem, a tendency to meet any proposal for the prevention of war and the promotion of peace with the argument that there is such a thing as a just war, and to leave it at that. There is a danger here of relapsing into the laissez aller attitude described by M. Maritain as "using the eternal truths as a pillow to go to sleep on." To restrict discussion to the question of whether there can be a just war in the abstract is to invite unreality."There is such a thing as a just war." For this position we have a formidable array of authorities, if we are to pin our faith to authorities; a formidable array of arguments, if we choose to take reason as our guide. "There is such a thing as legitimate self-defence, as legitimately helping the injured even by offensive warfare." A proper authority, a just cause, a right intention, these are, according to St. Thomas, the three prerequisites of the just war. Can they not often and easily enough be fulfilled? In theory perhaps; in the hypothesis of two isolated States, in an isolated point of time, with clear-cut and indisputable aggression or injury on the one side and the impossibility of any defence or redress other than by war on the other. Such a state of affairs, however, in the world of to-day is, to all intents and purposes, impossible

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