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The research examines the link between water scarcity and intrastate conflict, arguing that the relationship is not deterministic but is mediated by domestic political institutions. Using a simultaneous equations model for 98 countries (1981–2000), the authors find that while water scarcity does not directly increase the probability of conflict, it does negatively impact the likelihood of democratic institutions emerging. Crucially, the study finds that democratic regimes are more effective at mitigating the risk of conflict in water-scarce conditions. The authors suggest an 'ecological trap' where water scarcity promotes autocracy, which in turn fails to manage resources effectively, potentially leading to a cycle of scarcity, autocracy, and conflict.