In 2022, the United Nations and Haiti’s Ministry of the Environment took the initiative to establish the Haiti Climate Security Working Group, bringing together UN agencies, international organisations, Haitian government institutions and civil society organisations. To help guide the work of this group, adelphi led a collaborative effort to undertake a study mapping out the linkages between climate, peace and security in Haiti, applying the methodology of the Weathering Risk initiative. This policy brief presents some of the key findings of the study and proposes a new approach with an explicit focus on climate and peacebuilding, and with inclusion at its heart, to help address Haiti’s climate security challenges.