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Perfect Equilibrium in a Model of Competitive Arms Accumulation

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  • van der Ploeg, F
  • de Zeeuw, A J

Abstract

This paper shows that the subgame-perfect Nash strategic equilibrium, which is relevant when countries can monitor their rival's weapon stock, leads to lower levels of arms and higher welfare than the standard open-loop Nash strategic equilibrium for an arms race. This result is derived for a model of competitive arms accumulation, in which two countries face a classic "guns versus butter" dilemma in the form of utilities that depend on consumption, leisure, and the characteristic defense. Moreover, it is argued that the perfect equilibrium strategies lead to a more satisfactory strategic underpinning of the well-know Richardson equations. Copyright 1990 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.

Suggested Citation

  • van der Ploeg, F & de Zeeuw, A J, 1990. "Perfect Equilibrium in a Model of Competitive Arms Accumulation," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 31(1), pages 131-146, February.
    • Handle: RePEc:ier:iecrev:v:31:y:1990:i:1:p:131-46
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    1. Buiter, Willem H, 1984. "Saddlepoint Problems in Continuous Time Rational Expectations Models: A General Method and Some Macroeconomic Examples," Econometrica, Econometric Society, vol. 52(3), pages 665-680, May.
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    3. Kelvin J. Lancaster, 1966. "A New Approach to Consumer Theory," Journal of Political Economy, University of Chicago Press, vol. 74(2), pages 132-132.
    4. Rogoff, Kenneth, 1985. "Can international monetary policy cooperation be counterproductive?," Journal of International Economics, Elsevier, vol. 18(3-4), pages 199-217, May.
    5. De Zeeuw, Aart J. & Van Der Ploeg, Frederick, 1987. "Consistency of conjectures and reactions?," Economics Letters, Elsevier, vol. 24(2), pages 181-185.
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