After the conflict, war or hostilities there is an urgent need to rebuild the society for sustainable peace and prosperity. There is need to work for positive peace by removing all sorts of cultural and structural violence and injustices. As such, positive peace paves way to true reconciliation, justice, healing of both victims and society members and if possible forgiveness. Even when there is no longer conflict, leaders in a society should never lose focus on attending to the victims who suffered during the conflict. Constant peacebuilding and peacemaking should be done in societies that suffered conflict. As we will see in the article, Gacaca and Bulteok experiences are examples of approaches that have helped Rwanda and Jeju Island respectively in their quest for lasting peace and a just society. This article aims at explaining peacekeeping, peacemaking and peacebuilding approaches and how they are used by individuals, nations, and organizations to build peaceful societies. The article will give a realist critique of these approaches.