Fear or Anger? Leaders’ Childhood War Trauma and Interstate Conflict Initiation

How does a leader’s childhood exposure to war influence their propensity to initiate conflicts? While much research explains leaders’ national security policies using their combat and rebel experiences, few scholars have examined the effects of childhood wartime violence. I develop and test two competing arguments about the effects of childhood war trauma on future conflict behavior. One argument expects that leaders exposed to war at a young age will be less likely to initiate conflict because they fear its consequences. An alternative perspective expects that these leaders are more likely to initiate conflict out of anger and a desire for revenge. I test my hypotheses using an original dataset and a research design that reduces inference barriers. Leveraging variations in the level of violence experienced during wartime, I only compare leaders who were exposed to foreign military invasions as children. I find that those who experienced severe war trauma, such as family deaths, injuries, or displacement, are less likely to initiate interstate conflicts than those who did not experience such traumatic events. These effects are substantial, particularly when political constraints are weak. My results suggest that childhood war trauma has a long-term impact on leaders’ conservatism about using force.