RT Article T1 Ethnic External Support and Rebel Group Splintering JF Terrorism and political violence VO 33 IS 7 SP 1546 OP 1566 A1 Ives, Brandon LA English YR 2021 UL https://krimdok.uni-tuebingen.de/Record/1774531992 AB What leads some rebel groups to remain cohesive, while others fragment into multiple rebel groups? A growing literature examines the causes behind fragmented non-state actors and movements. Building on this work, this article examines the relationship between a rebel group and its external supporter and focuses on the extent of ethnic links between the two. It advances a novel argument for why rebel groups that receive external support from non-ethnic supporters are more likely to fragment. Using statistical analysis, I examine the relationship between ethnic and non-ethnic external support and fragmentation from 1975 to 2009. I find that an increasing percentage of co-ethnic external support is negatively associated with rebel group fragmentation. Examining variation in the relationship type that rebel groups and external supporters share provides us a fuller understanding of why some rebel groups remain cohesive and why others fragment. K1 Civil War K1 splintering K1 external support K1 Fragmentation K1 Ethnicity DO 10.1080/09546553.2019.1636035