
“Networks in Conflict: Theory and Evidence from the Great War of Africa”by Mathias Thoenig
Economics Seminar
Author:
Mathias Thoenig
University of Lausanne, SwitzerlandMichael D. König
University of ZurichDominic Rohner
University of LausanneFabrizio Zilibotti
University of Zurich
We study from both a theoretical and an empirical perspective how a network of military alliances and enmities affects the intensity of a conflict. The model combines elements from network theory and from the politico-economic theory of conflict. We obtain a closed-form characterization of the Nash equilibrium. Using the equilibrium conditions, we perform an em- pirical analysis using data on the Second Congo War, a conflict that involves many groups in a complex network of informal alliances and rivalries. The estimates of the fighting externalities are then used to infer the extent to which the conflict intensity can be reduced through (i) dismantling specific fighting groups involved in the conflict; (ii) weapon embargoes; (iii) inter- ventions aimed at pacifying animosity among groups. Finally, with the aid of a random utility model we study how policy shocks can induce the reshaping of the network structure.