Humanitarian actors play a critical role in responding to climate-related crises, armed conflict, or a combination of both. Their response comes with an environmental cost. Humanitarian staff air travel, for instance, represents a significant source of carbon emissions and humanitarian logistics remain heavily dependent on fossil fuels. As the demand for humanitarian response climbs and countries increase their commitments to curb climate change, a question arises: Can humanitarian organizations mitigate their environmental impact and remain effective in responding to the consequences of armed conflict and climate impacts?

In January, the Biden Administration released the Executive Order on Tackling the Climate Crisis at Home and Abroad. It is a sweeping document that integrates climate concerns into policy and governance, including into national security. It recognizes that environmental security, the integration of environmental considerations into national security strategy, policy, and programs, is essential to combat the global climate crisis and should be mainstreamed across U.S. government efforts. The idea is not a new one. One of the authors (Goodman) led early environmental security efforts in the U.S. Department of Defense (DoD) for 8 years of the Clinton Administration in the 1990s, during the first chapter of awareness of environmental considerations in defense and foreign policy.

Environmental dimensions of armed conflicts

Years of armed conflict have devastated Yemen’s environment, contributing to one of the worst humanitarian crises in the world. Attacks on water infrastructure cut off thousands of people from access to safe drinking water, exacerbating a cholera outbreak that has caused an estimated 4,000 deaths since April 2017. Fighting also damaged Yemen’s agricultural infrastructure, contributing to the food insecurity of an estimated 16.2 million people.

“We need to devote our full attention to the relationship between water, climate, and security, increase understanding of the issue, and take urgent action,” said Carola van Rijnsoever, Director of Inclusive Green Growth at the Netherlands Ministry of Foreign Affairs, at a recent Hague roundtable on building a transatlantic coalition for climate action on water and security challenges in countries of risk.

Whether and how climate change drives conflict has driven considerable debate over the past decade. Yet understandings of climate-conflict remain general, and in many respects, unsettled. A recent assessment of potential future directions for climate-conflict research highlights the need to go beyond generalities and deepen insight into the contextual mechanisms that link climate change to conflict. That type of knowledge requires in-depth studies that trace climate-conflict dynamics in particular places and times. In an article recently published in Climate and Development, I examine how climate change alters conflict outcomes and vulnerability in Karamoja, Uganda.  The case offers direct insight into both why the climate-conflict relationship can be so difficult to interpret and also the need to broaden conceptualizations of the climate-conflict relationship. 

“Addressing the link between climate, conflict, and environment is a critical piece of the new USG framework for addressing fragility, and, as the Biden administration scales up its efforts to center climate change in its foreign policy and national security agendas, it’s going to be essential to consider the linkages between climate action and opportunities to build peace,” said Joe Hewitt, Vice President at the U.S. Institute of Peace during a recent event co-hosted by the Wilson Center and the U.S. Institute of Peace on the importance of integrating climate change responses, conflict prevention efforts, and peacebuilding.

Not only is the Sahel highly vulnerable to the impacts of climate change, but it is also one of the regions where climate change is most likely to undermine security and trigger violent conflict. Now more than ever, climate security risks must be effectively integrated into stabilisation and peace operations in order to achieve stability in the region.

Climate change is a defining global issue of our time. In a recent address to the UN Security Council, John Kerry, the U.S. presidential envoy for climate, remarked that climate change is “the challenge of all of our generations.” An important dimension of the challenge presented by climate change concerns its implications for state and human security.