Book excerpt: This cutting-edge book illuminates the key characteristics of inclusivity in mediation during armed conflicts and post-conflict peacebuilding. Daisaku Higashi illustrates the importance of mediators taking flexible approaches to inclusivity in arbitration during armed conflicts, highlighting the crucial balance between the need to select conflicting parties to make an agreement feasible and the need to include a multiplicity of parties to make the peace sustainable. Higashi also emphasizes the importance of inclusive processes in the phase of post-conflict peacebuilding.