A Dynamic Model of the Spread of Intrastate War

The spread of intrastate war has gained increasing prominence, especially in the recent past. This paper studies the spread of intrastate war as a result of another intrastate war in a neighboring country using a system dynamics modeling approach. The model employed is a modification of the SIR, a spread of disease model taken from epidemiology. Revising the SIR model with relevant political and economic variables, the model seeks to explain the mechanism through which an intrastate conflict is spread from an "infected" country to a "susceptible" country. Although diffusion and contagion of civil wars have been widely examined in the past, a dynamic modeling approach has not been adequately used in this area. Consistent with the existing literature, the results of the model suggest that refugees are a means to carry the conflict disease from the initial country by disturbing economic and social dynamics of the host whereas political capacity acts as the immune system, reducing the likelihood of conflict contagion. The results of the simulations, obtained using theoretical parameters, are mainly consistent with the expectations.