Abstract
This article attempts to evaluate the claims of Bruce Bueno De Mesquita in The War Trap to have provided a deductive, expected utility theory of war initiation in the light of various criticisms that have been levied against him. The criticisms concern both the status of the model as a rational choice model and the evidence adduced in its support. It is suggested that the interpretation of the concept used in the theory as expected utility is both unnecessary and misleading, while the strong claim of the theory to provide necessary conditions for war initiation is refuted, not confirmed, by the evidence presented. However, a weaker, but still important claim may well be true, though only a part of the evidence presented is appropriate to support it. The assertion that the theory is a step forward in a Lakatosian Research Program, in that it explains more than its predecessors, is viewed skeptically.
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