Environmental peacebuilding (frequently also termed environmental peacemaking) examines and advocates environmental protection and cooperation as a factor in creating more peaceful relations. Peacebuilding is both the theory and practice of identifying the conditions that can lead to a sustainable peace between past, current or potential future adversaries. At the most basic level, warfare devastates ecosystems and the livelihoods of those who depend on natural resources, and the anarchy of conflict situations leads to the uncontrolled, destructive exploitation of natural resources. Preventing these impacts allows for an easier movement to a sustainable peace. From a more positive perspective, environmental cooperation can be one of the places where hostile parties can sustain a dialogue, and sustainable development is a prerequisite for a sustainable peace.

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