Dealing with Divergence: Intra-party Dynamics and Spoiler Management in Civil Wars

Abstract Civil war peace processes are frequently accompanied by spoiler behavior relating to intra-party divergence, such as leadership struggles or breakaway groups, which risk undermining the implementation of a peace accord. However, previous literature has not sufficiently explored how third-party actors can address spoiler behavior linked to such intra-party aspects. This study addresses this gap by providing an empirical analysis of a few illustrative cases of spoiler behavior by armed actors in two peace processes in West Africa—Sierra Leone after the 1999 Lomé peace accords and Liberia after the 2003 Accra peace agreement. We find that in contexts where there is a vertical divergence between the leader and the rest of the group, divisive strategies—aimed to divide and rule or marginalize—are effective. In contrast, in situations of horizontal divergence between different factions that are more equal in power, integrative strategies—aimed at unifying the ranks or reconciling a divided leadership—are more appropriate. This study enhances our understanding of how third-party strategies can be devised to manage intra-party divisions that otherwise may threaten a transition from war to peace.