The literature on the transnational dimension of civil wars points to transnational ethnic kin as an important catalyst that initiates and sustains civil wars. Ethnic ties that transcend national boundaries, these studies argue, intensify the conflict by providing sanctuaries as well as human and material resources to the rebels. In this study, I argue that the same transborder ethnic ties make it more difficult for the government to achieve a decisive victory and contribute to outcomes more favorable to rebels. These networks can help create a more balanced relationship between an ethnic group and a previously antagonistic state by increasing the political, economic, and military costs of repression for the government. An analysis of ethnic civil wars starting and ending between 1950 and 2006 demonstrates that civil wars fought by ethnically mobilized rebel groups are more likely to be negotiated and settled in favor of rebels who have ethnic kin in a neighboring country.
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