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Preprint_SYK_2022_Conflict-Cooperation-Yemen-Networks.pdf (2.51 MB)

Salient Cleavages, Tactical Cooperation and Violence between Armed Groups in Yemen

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posted on 2023-03-21, 10:15 authored by Sukayna Younger-KhanSukayna Younger-Khan

Existing scholarship ignores relational interdependencies when attempting to understand the behaviour of non-state armed groups during civil war. This paper investigates the in- terconnected web of alliances and rivalries in the Yemen Civil War to answer the following question: why do armed groups fight each other? We employ a network approach to investigate determinants of intergroup violence. This emphasises the role of identity, arguing that operating in salient cleavages necessitates that groups align or distinguish themselves from each other. We further argue that informal cooperation incentivises violence the longer the war continues. These arguments are tested using pooled Exponential Random Graph Models to account for endogenous structures over time. Results indicate that shared identity is a significant driver of hostilities, moderating cooperation and amplifying the effects of group attributes. Robustness checks and simulations demonstrate that network models more accurately capture the underlying mechanisms to predict fighting in this case.


WZB Research Fellowship


Declaration of conflicts of interest


Corresponding author email

Lead author country

  • Germany

Lead author job role

  • PhD Student

Lead author institution

University of Konstanz

Human Participants

  • No

Ethics statement

No human subjects - no ethics approval required.

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