摘要:In both Northern Ireland and Korea, the euphoria following significant breakthroughs towards peace in the late 1990s and early 2000s turned into deep frustration when confronted by continuous stalemates in implementing the agreements. I explore the two peace processes by examining and comparing the breakthroughs and breakdowns of both, in order to identify potential lessons that can be shared for a sustainable peace process. Using a comparative case study, I demonstrate the parallels in historical analyses of why the agreements in the late 1990s and early 2000s in Northern Ireland and Korea were expected to be more durable than those of the 1970s. I also examine the differences between the two peace processes in the course of addressing major challenges for sustaining the two processes: disarmament; relationships between hard-line parties; cross-community initiatives. These parallels and differences inform which lessons can be shared between Northern Ireland and Korea to increase the durability of the peace processes. The comparative case study finds that the commitment of high-level leadership in both conflict parties to keeping negotiation channels open for dialogue and to allowing space for civic engagement is crucial in a sustainable peace process, and that sharing lessons between the two peace processes can be beneficial in finding opportunities to overcome challenges and also for each process to be reminded of lessons from its own past experience.