Climate change’s potential to aggravate insecurity, particularly through violent conflict, has created a fear that is both widespread and justified. Civil and defense ministries around the world now include climate impacts in their strategic planning, and climate security assessments have become a common policy tool.

When catastrophic floods struck civil war-ridden Libya in the late summer of 2023, the catastrophe caused over 10,000 deaths and wreaked immense destruction throughout the nation’s northeastern regions. But because none of the warring factions were in full control of the country and international responders were concerned about being caught in the crossfire, relief efforts were delayed and limited. This confluence of factors amplified human suffering, particularly in Libya’s remote and worst-affected areas.

For most of 2020, news, politics, policy, and research in the United States and abroad were dominated by the challenges posed by COVID-19, a rapidly unfolding global pandemic unprecedented in scale and cost. For much of the world, however, COVID-19 in fact competed with many other highly destructive events including a cascade of environmental disasters. Swarms of locusts pushed much of the Horn of Africa into or close to famine; 30 severe storms including Hurricanes Iota and Eta battered the Atlantic coasts; some 4 million acres of forest burned to the ground in California, doubling the previous high reached in 2018; typhoons ravaged the Philippines; floods overwhelmed parts of Indonesia; and many regions around the world experienced devastating heat waves. In addition to disaster patterns, the trends in violent state conflict were equally alarming, reaching their highest level since the end of World War II, according to a 2020 report on conflict trends from PRIO. In the most violent conflicts, in Syria and Yemen, the impacts of war have been amplified and complicated by the impacts of drought and years of environmental mismanagement.

Environmental peacebuilding is a good idea. As a practice, it aims to address simultaneously environmental problems and challenges related to violent conflict. Examples include the promotion of environmental cooperation between rival states, conflict-sensitive adaptation to climate change, and restoring access to land and water in post-conflict societies. As a concept, environmental peacebuilding directs researchers’ and politicians’ attention to cooperative adaptation as a response to environmental stress. It thus helps to correct one-sided narratives about environment-conflict links.

Although water is an essential input for agriculture and industrial production, it is also scarce in many regions. When it crosses international borders via shared rivers, lakes and aquifers, it can become a source of conflict and contention. Yet while water can be a source of instability, especially in the face of climate change, it can also be a source or catalyst for cooperation and even peace.

Environmental stress and climate change can accelerate instability and conflict—but shared environmental problems can also be a source of cooperation and facilitate peacemaking between states. Transnational environmental problems are common threats and often cross national boundaries, requiring international cooperation to address. In turn, this cooperation can provide a good entry point for building trust and cooperation.

Scholarly attention to the links between climate change and conflict has increased. But which places are analyzed most frequently by researchers, and what are the implications of their choices?