The Doctrine of Military Self-Defense

The Doctrine of Military Self-Defense is not treated as a neutral rule for judging isolated military actions, but as a political logic that makes force appear morally necessary. Its central asymmetry is that a state understands its own military preparations as defensive while imagining its neighbor as disposed to conquer. Because neighboring states can make the same claim, self-defense becomes a mutually reinforcing presumption of innocence at home and danger abroad—a presumption that can itself provoke the hostility it purports to forestall.

The Reciprocal Logic of Defense

The book develops this argument through Friedrich Nietzsche’s critique of the morality of self-defense. A state that justifies keeping an army on defensive grounds must imagine its neighbor as an aggressor, even when that neighbor offers the same justification for its own forces. Each side thus credits itself with good intentions and assigns the other a concealed desire for conquest. The doctrine does not simply describe a threat; it helps install suspicion as the starting point from which military action is judged.

That assumption is more than a mistaken reading of another state’s motives. By attributing immorality to the neighbor in advance, it can invite the hostile disposition and acts that confirm the original suspicion. The book therefore argues that the doctrine must be rejected alongside the desire for conquest: otherwise, a state’s assertion that it is only defending itself remains bound to a view of its neighbor as an enemy in waiting.

Power, Violence, and Political Legitimacy

The critique is sharpened by Hannah Arendt’s distinction between political power and the direct exercise of violence. Organizations governed by command, including armies, churches, and schools, exemplify forms of authority that are not, in themselves, politically grounded power. Yet political power is not thereby free of violence: it relies on an obscene supplement of force, while apparently nonpolitical relations of subordination can themselves embody prior political decisions and struggles.

This account complicates any claim that military force is made purely legitimate by calling it defensive. The public language of law and political authority can coexist with informal or disavowed violence that sustains the order it presents as lawful. The relevant question is therefore not only whether force has been formally ordered, but what political relations and tacit permissions make it possible. The doctrine’s moral language can conceal those conditions by presenting military force as a response to danger rather than as part of the organization of power.

Humanitarian Defense and Political Projects

The book also examines intervention justified as a defense of people from suffering. The overthrow of Saddam Hussein by the United States was legitimized in terms of ending the suffering of the Iraqi people, but the intervention was also tied to political-economic interests, including oil, and to a particular program for Iraq: Western liberal democracy, private property, and inclusion in the global market economy. A humanitarian rationale can therefore appear to stand outside politics while advancing a specific political and economic arrangement.

This criticism does not depend on denying that suffering exists. It concerns what follows when preventing suffering is treated as a self-evidently sufficient justification for intervention. In the book’s account, a politics confined to that task can implicitly prohibit the development of a positive, collective project of sociopolitical transformation. The doctrine of defense becomes suspect when its apparently universal moral purpose masks the choice of which political future will be imposed.

Threat, Preemption, and Legal Exception

The doctrine’s logic becomes especially consequential when the enemy is imagined as invisible or not yet acting. The book argues that an unspecified threat invites fantasy to fill in what cannot be seen, while the figure of an external enemy can legitimate a permanent state of emergency. If a threat is treated as virtual but potentially imminent, waiting for it to become actual can be represented as irresponsible; striking in advance then appears as defense.

The result is a reversal: the threat need not materialize for measures against it to be continually enacted. The book contrasts the Cold War’s threat of mutual nuclear destruction, which had to remain a threat, with the War on Terror, in which the spectral possibility of an attack prompts repeated action against potential terrorists. These protective measures can themselves threaten democracy and human rights, even as the power imposing them describes itself as endangered.

The treatment of Guantánamo prisoners shows how this logic can reach legal status. One argument for their treatment held that they had been missed by the bombs and that capture was less terrible than death. The book reads this reasoning as placing the prisoners in a position between biological survival and legal death: they are treated as Homo sacer and bare life, whose lives no longer count within ordinary legal protections. The authorities, in turn, exercise power in an exceptional space that remains within the domain of law while escaping its usual restrictions. The doctrine’s significance thus lies not only in how it authorizes force, but in how defensive necessity can be used to redraw the limits of law itself.