“…Third-party interventions have long been considered one of the most important events in civil war processes, affecting both duration and outcome of these conflicts (Balch-Lindsay, Enterline & Joyce, 2008;Gent, 2008). While extant accounts typically assume motives such as preference for ending the conflict or affecting its outcome in favor of a particular side, relatively few quantitative studies attempt direct modeling of factors influencing the probability of intervention (see Kathman, 2011;Lemke & Regan, 2004;Aydin, 2012). If interventions do matter for civil war processes, investigation of what makes them more or less probable is an important antecedent to discussions of their effectsincluding war duration and outcome, or even their supposed peace-promoting potential (see Fortna, 2008;Shelton, Stojek & Sullivan, 2013).…”