This paper addresses the relationship between rebel training from external sponsors and civil war outcomes. While past research has examined how foreign support, broadly, shapes the dynamics of civil wars, little attention has been paid to how foreign training of rebel fighters affects civil wars. We theorize that rebels that receive training from formerly successful rebels are more likely to experience favorable conflict outcomes than those with no training or with training from sponsors inexperienced with fighting a civil war. These propositions are tested with a quantitative analysis of all intrastate conflicts from 1975 to 2010, providing support for our hypothesis.

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