A rich literature addresses how a state’s capabilities, its desire to aid or exploit a warring neighbor, and its alliance commitments determine whether or not the state joins an ongoing conflict. However, an important geopolitical consideration – proximity to the location of the...

The collapse of Mobutu's Zaire and the arrival of father and son Kabila regimes in the Democratic Republic of the Congo (hereafter, the DRC) were hastened by the dramatic and tumultuous spread of violence from neighboring Rwanda. Mobutu's state's inability to manage the influx of Hutu refugees...