Last month, a major multinational military exercise launched in South and Southeast Asia. The Pacific Partnership is the largest annual multilateral humanitarian assistance and disaster relief preparedness mission conducted in the Indo-Asia-Pacific and aims to enhance regional coordination in areas such as medical readiness and preparedness for manmade and natural disasters. At its center is the hospital ship USNS Mercy, with an international team of civilian and military specialists seeking to build response capacity in one of the most disaster-prone regions of the world.

To further its goals to strengthen the global economy, China has already invested $300 billion of its pledged $1 trillion towards its Belt and Road Initiative—a massive infrastructure investment plan that spans 60 countries across Southeast Asia, Central Asia, Africa, South Asia, the Middle East, and Eastern Europe. China’s initiative will shift the world’s political, environmental, and economic landscape.

The effects of climate change on an abandoned U.S. nuclear project in Greenland could create not just environmental problems, but also disrupt military politics and spur diplomatic conflicts. My new article in Global Environmental Politics finds that climate change will eventually expose toxic waste, long immobilized by ice, at Camp Century, which the U.S. military left in the 1960s. This situation—which has already spurred the dismissal of Greenland’s foreign minister—could be the canary in the coalmine signaling that climate change will further complicate the already contentious politics of military bases.

As senior military officers, we see water stress—the lack of adequate fresh water—as a growing factor in the world’s hotspots and conflict areas, many of vital interest to the United States. Our earlier reports have identified a nexus among climate, water, energy, and U.S. national security. We have previously shown how emerging resource scarcity across this nexus can be a threat multiplier and an accelerant of instability. With escalating global population and the impact of a changing climate, we see the challenges of water stress rising with time. It is in this context that we now seek to provide a better understanding of the mechanisms through which water factors into violence and conflict.

For the first time, the Joint Doctrine of the Indian Armed Forces acknowledges that the “environment has emerged as a critical area of the security paradigm,” and warns that if environmental degradation and related issues increase security risks, the military will need to respond. Released in 2017, the doctrine lists a series of non-traditional security challenges linked to the environment that could influence conflict and war, including “climate change, ecosystem disruption, energy issues, population issues, food-related problems, economic issues of unsustainable modes of production, and civil strife related to environment.” While the military has taken steps to address its impacts on the environment, it can do much more to support the nation’s environmental goals and mitigate environment-related security risks.

The Trump administration’s first National Defense Strategy, which was released last Friday, outlines the U.S. Department of Defense’s national security goals in a world it describes as rife with great power competition between the United States, Russia, and China. Climate change – which some military leaders warn poses a looming threat to the effectiveness of American military power – was not mentioned, in stark contrast to the previous administration’s strategic priorities. National security and defense strategies issued by the Obama Administration highlighted the dangers climate change poses to national security, including “increased national disasters, refugee flows, and conflicts over basic resources like food and water.”

In the war-torn Jordan River Valley, we can meet the “strategic objective of reducing conflict by promoting cooperation on shared waters,” said former defense official Sherri Goodman at a recent Wilson Center event on environmental peacebuilding. Even in the midst of political disputes, Jordanians, Israelis, and Palestinians must work together to manage the scarce supplies of clean water to protect their health, their economies, and their security.

“Climate engineering can be a way to build a better world,” said Katharine Mach, a senior research scientist at Stanford University during a recent virtual workshop on the promises and pitfalls of climate engineering held by the Institute on Science for Global Policy, in partnership with the Forum for Climate Geoengineering Assessment at American University, and the School of Sustainability at Arizona State University.