47 Disarming Militant Groups from Within: Building Support for Peace among Combatants in Northern Ireland Benedetta Berti, Ariel Heifetz Knobel, and Gary Mason This study examines the internal process that led Northern Irish combatant groups, mainly the Loyalist camp, to relinquish armed struggle as a viable strategy to accomplish their political goals. Rather than looking at the content of the peace agreement or at the negotiation and reconciliation processes between Loyalists and Republicans, the authors focus on internal dynamics, i.e., intra-group negotiations and consensus building mechanisms that Loyalist militant organizations employed with their own members to switch from violence to nonviolence, and from confrontation to engagement with the enemy. The paper underlines how the consensus building process was multi- faceted and included a combination of carefully structured internal deliberations amongst combatants, together with the crafting and implementation of targeted programs to empower and transform militant organizations and their role within society. The paper also focuses on the specifc roles ex-prisoners and key faith leaders played in shaping this monumental transformation. The paper emphasizes the importance of building widespread support for peace and of engaging, rather than alienating, potential opponents. In addition, by examining the policies used to deepen support for nonviolence throughout the past 17 years following the Good Friday Agreement, the paper underscores the importance of continuing peace eforts in the post-agreement phase. Finally, the authors examine the main lessons that can be learned from the consensus building process among Northern Irish Loyalist combatants and discuss its relevance to other intractable conficts.