David R Smock 
Religious Contributions to Peacemaking [PDF ebook] 

This book contains an analysis of the keys of success in interfaith dialogue as a mechanism for resolving violent conflicts. It lifts up the unique elements of religious peacebuilding, with a particular focus on apology and forgiveness. It also emphasizes the importance of keeping issues of social justice front and center, so that religious peacebuilding does not merely make the participants feel better