The Impact of Conventional Force Reductions on Strategic Deterrence: A Game-Theoretic Analysis

Many game-theoretic analyses of deterrence confirm the commonsense view that what determines whether a defender can effectively deter a challenger from an unwanted action is (1) the challenger’s perception of the level of punishment that the defender will be able to impose on the challenger should it take the action, and (2) the challenger’s level of belief about the likelihood of the defender actually carrying out this punishment. Reduction of the defender’s forces may affect both the defender’s ability to retaliate and its perceived willingness to do so. Game-theoretic methods are used to assess how the limits on both of these parameters are related, subject to the condition that deterrence remains effective. The results indicate that the defending side can often make do with smaller forces, provided its (apparent) resolve is high. But force structure is important—the models suggest that implementation of an “all-or-nothing” deployment (as called for by a doctrine of massive retaliation, for example) may reduce not only costs, but also deterrence effectiveness

DETERRENCE THEORY

This article argues that classical (or rational) deterrence theory is logically inconsistent, empirically inaccurate and prescriptively deficient. In its stead it offers an alternative theoretical framework – perfect deterrence theory – that makes consistent use of the rationality postulate and is in accord with the empirical literature of deterrence. Perfect deterrence theory’s axiomatic base, its empirical expectations and its most significant policy prescriptions are highlighted and contrasted with those of classical deterrence theory. The theory’s implications for current policy debates about a national missile defense system, arms control, US policy toward China and Russia, and inter-state negotiations in general, are discussed. KEY WORDS. arms control. deterrence and rationality. US foreign policy Classical deterrence theory, or what Glaser (1989) calls the ‘punitive retaliation school’, constitutes the conventional wisdom in international relations scholarship. An intellectual descendant of balance of power theory, classica

Perfect Deterrence Theory

Perfect deterrence theory and classical deterrence theory are two theoretical frameworks that have divergent empirical implications and dissimilar policy recommendations. In perfect deterrence theory, threat credibility plays a central role in the operation of both direct and extended deterrence relationships. But credible threats are neither necessary nor sufficient for deterrence to prevail, and under certain conditions, the presence of a credible threat may actually undermine deterrence. In perfect deterrence theory, the cost of conflict and status quo evaluations are also important strategic variables. Classical deterrence theorists tend to fixate on the former and ignore the latter. This theoretical oversight precludes a nuanced understanding of the dynamics of deterrence.</p