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Cooperation between National Armies: Evidence from the Sahel borders

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  • Marion Richard
  • Oliver Vanden Eynde

Abstract

The effectiveness of security operations often depends on cooperation between national armies. Such cooperation can be particularly important when international borders are porous and armed groups can operate across borders. We investigate how the creation of an international armed force that could operate across international borders (the G5-Sahel Joint Force) together with improved communication between national armies affected conflict dynamics in the Sahel region. Relying on a regression discontinuity design, we find that the G5 mission lowered the intensity of conflict locally in its zone of operation, especially along border segments more porous due to their geographical features or ethnic composition. Further analysis of geographical conflict propagation patterns indicates that the G5-Sahel force facilitated security operations in border areas.

Suggested Citation

  • Marion Richard & Oliver Vanden Eynde, 2025. "Cooperation between National Armies: Evidence from the Sahel borders," Nova SBE Working Paper Series wp2507, Universidade Nova de Lisboa, Nova School of Business and Economics.
    • Handle: RePEc:unl:unlfep:wp2507
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    Keywords

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    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • D74 - Microeconomics - - Analysis of Collective Decision-Making - - - Conflict; Conflict Resolution; Alliances; Revolutions
    • L23 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Organization of Production

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