IDEAS home Printed from https://ideas.repec.org/p/hal/journl/halshs-05661421.html

Cooperation between national armies: Evidence from the Sahel borders

Author

Listed:
  • Marion Richard

    (NOVA SBE - NOVA - School of Business and Economics - NOVA - Universidade Nova de Lisboa = NOVA University Lisbon, NOVAFRICA, UCLouvain - Université Catholique de Louvain = Catholic University of Louvain)

  • Oliver Vanden Eynde

    (PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - ENPC - École nationale des ponts et chaussées - IP Paris - Institut Polytechnique de Paris, PJSE - Paris Jourdan Sciences Economiques - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - ENPC - École nationale des ponts et chaussées - IP Paris - Institut Polytechnique de Paris, CEPR - Center for Economic Policy Research)

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, 2026. "Cooperation between national armies: Evidence from the Sahel borders," Post-Print halshs-05661421, HAL.
    • Handle: RePEc:hal:journl:halshs-05661421
    DOI: 10.1016/j.jdeveco.2026.103726
    as

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a
    for a similarly titled item that would be available.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hal:journl:halshs-05661421. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: CCSD (email available below). General contact details of provider: https://hal.archives-ouvertes.fr/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.