About this episode

This episode explores the influence of foreign fighters on insurgencies in Afghanistan and Somalia, emphasizing the role of local insurgents in driving outcomes.

Episode 154 of the Irregular Warfare Podcast examines a core puzzle in intrastate conflict: how a small number of foreign fighters can exert outsized influence on insurgencies. Anchored in Professor Tricia Bacon’s The Counterinsurgency Dilemma, this episode explores when foreign fighters strengthen insurgent groups—and when they undermine them. While foreign fighters are often associated with higher levels of violence, they typically make up only a small share of insurgent forces. As Bacon argues, this reveals a key insight: local insurgents—not foreign fighters—drive outcomes. They control strategy, resources, and relationships with the population, making them the decisive actors in any insurgency. Foreign fighters can still provide meaningful advantages. They bring combat experience, specialized skills, and sometimes external funding. Their high risk tolerance and ideological commitment can make groups more aggressive and tactically capable. In fragmented insurgencies, they can even shift the balance of power among rival factions. However, these benefits come with serious costs. Foreign fighters often lack cultural understanding and local legitimacy, and their preference for…

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