Religion’s influence is growing not only in society but also in the diplomatic world. Accepting the principles of transparency and equality as the main framework, diplomatic relations can involve intercultural and interfaith dialogue to help prepare governments and international organisations to take proactive roles in building trust during negotiations. All three main monotheistic religions incorporate ideals of peace, and such ideals can inspire governments and international organisations. How can faith-based organisations contribute to building trust in diplomatic relations? In what ways, and in what specific areas can religious actors and diplomats work together? What forms of interfaith dialogue have been established so far, in what ways can they be improved so that they would influence diplomacy? What else needs to be done so that interfaith dialogue could be effective in building trust during diplomatic negotiations?