Intergenerational trauma is increasingly prevalent among youth from generations that have endured collective trauma due to prolonged armed conflict. Existing research indicates that this trauma is often linked to an elevated risk of heightened violence within affected communities. However, there remains a lack of substantial research on effective interventions for humanitarian organisations to address this issue. Moreover, typical approaches tend to follow Western standards, which may not be suitable for the conditions faced by these communities. This research paper investigates the potential of incorporating community-based coping strategies into the Mental Health and Psychosocial Support (MHPSS) programs employed by humanitarian organisations. Moreover, it explores whether the integration could lead to more sustainable and positive outcomes for affected communities that align with the humanitarian-development-peace nexus. This paper achieves this through an extensive literature review and a case study examining intergenerational trauma and its impact on Palestinian youth in the occupied Palestinian territories of the Gaza Strip and West Bank (including East Jerusalem). It evaluates the community-based coping strategies in place and assesses their effectiveness. The findings of this research emphasise the importance of community engagement and the incorporation of existing coping strategies to effectively address intergenerational trauma among affected youth. This research also indicates a predominantly positive association between existing coping strategies and community resilience. Moreover, the existing coping strategies utilised by the affected communities have the potential to break the cycle of violence, which frequently results from intergenerational trauma. Finally, this research presents that these strategies foster a more sustainable peace process.