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A Macrodynamic Model of War: Addressing Kant’s Democratic Peace Proposition

Author

Listed:
  • Gauthier Laurent

    (ESPRI/ArScAn, Université Paris Nanterre, Paris, France)

  • Parent Antoine

    (129664 LED, Université Paris 8 , Paris, France)

  • Touzé Vincent

    (OFCE – Sciences Po, Paris, France)

Abstract

War and political regime are fundamentally linked. From Athen’s democratic empire in the 5th Century BCE, through the industrialization of war in the 19th and 20th centuries to today’s nuclear powers, all forms of political regimes have been involved in war. Very few macroeconomic models have accounted for the costs and benefits of war. We develop a macrodynamic model of war in order to address Kant’s notion of democratic perpetual peace. We enrich macroeconomics by introducing regime-specific sensitivity to human loss, which affects the desirability of war. Our model, based on a dynamics à la Solow, can account for multiple wars throughout history.

Suggested Citation

  • Gauthier Laurent & Parent Antoine & Touzé Vincent, 2026. "A Macrodynamic Model of War: Addressing Kant’s Democratic Peace Proposition," The B.E. Journal of Macroeconomics, De Gruyter, vol. 26(1), pages 121-162.
    • Handle: RePEc:bpj:bejmac:v:26:y:2026:i:1:p:121-162:n:1008
    DOI: 10.1515/bejm-2025-0167
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    Keywords

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    JEL classification:

    • E22 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Investment; Capital; Intangible Capital; Capacity
    • F5 - International Economics - - International Relations, National Security, and International Political Economy
    • H56 - Public Economics - - National Government Expenditures and Related Policies - - - National Security and War
    • O41 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models
    • N4 - Economic History - - Government, War, Law, International Relations, and Regulation

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