The Indus Waters Treaty of 1960 has kept two nuclear-armed rivals – India and Pakistan – in a stable river sharing arrangement for more than six decades. Yet that significant achievement now seems to be at risk.

India’s government has stated it is holding the treaty in abeyance and is threatening to cut off water to Pakistan after a terrorist attack killed more than 20 Indian citizens in late April 2025. India’s Prime Minister Narendra Modi described the treaty as a “blunder” and a “betrayal” of India’s dignity committed by then Prime Minister Jawaharlal Nehru, and proclaimed that “blood and water cannot flow together.”

Summer is often a time for grim climate milestones, as ever-more intense heatwaves scorch large swathes of the planet. But this year, the bad news arrived earlier than usual when the United States refrained from sending representatives to the UN-sponsored climate talks in Bonn, Germany, for the first time in the talks’ 30-year history. The intercessional talks are in some ways more important ever than the more widely reported on climate COPs because they are where many especially tricky issues are negotiated. The Trump Administration’s unilateral withdrawal from international negotiations is bad news for the climate. But it is even worse news for US national security. Climate diplomacy is a big part of soft power and influence, and Washington is rapidly losing out to Beijing.

A window into what we’re reading at the Stimson Center’s Environmental Security Program 

Low Political Will and Depleted Supplies: Inside Iran’s Water Crisis  (The New York Times) 

Water shortages are a day-to-day reality for many Iranians, as reservoirs shrink, taps run dry for hours, and water pressure remains so low that it doesn’t reach above the second floor. This acute water crisis is driven by a confluence of climatic changes and poor water policies, as Iran’s five-year drought has combined with overdevelopment, excessive dam development, and draining groundwater for agriculture to push already dwindling supplies to the brink. 

In Myanmar’s resource-rich Kachin State, deforestation linked to illegal logging and mining has surged over the past decade. While the national government struggles to assert control, the Kachin Independence Organization (KIO)—a political organization seeking autonomy for Kachin State in Myanmar—has also stepped in to regulate land use, restrict timber harvests, and manage permits. These activities serve to conserve local ecosystems and extract revenue. KIO’s environmental governance is strategic, aiming to bolster civilian support and consolidate territorial control. It is also shaping how communities cope and adapt to climate change.

Somalia’s new Nationally Determined Contribution (NDC)—the country’s roadmap for climate mitigation and adaptation—does more than outline the country’s climate ambitions. It recognizes the connections between climate change and conflict and charts a course for peace.

The Mekong River’s seasonal floods nurture the world’s most productive inland fishery and irrigate rice paddies that feed millions. Approximately 70 million people live in the lower Mekong Basin, and 75% of them depend on fishing and farming for their livelihoods. But hydropower expansion and other development projects are fragmenting the river and disrupting its natural rhythms, with severe consequences for those living downstream.

A window what we’re reading at the Stimson Center’s Environmental Security Program

The World’s Children Face the Most Severe Impacts from Wildfire Smoke (Mongabay)

Evidence of the alarming impacts of wildfire smoke on child health is growing. Children’s developing lungs, faster breathing rates, and greater outdoor exposure make them uniquely vulnerable, and the threat is intensifying as wildfires grow more extreme, incinerating not just forests but urban areas, releasing toxic heavy metals and chemicals. 

A window into what we’re reading at the Stimson Center’s Environmental Security Program

Heat-Related Deaths May Have Tripled during Europe’s Heat Wave (Washington Post) 

A record-breaking heat wave in late June and early July pushed temperatures well above 100°F across Europe. Analysis from Imperial College London and the London School of Hygiene and Tropical Medicine found that of the 2,300 heat-related deaths in 12 major European cities between June 23 and July 2, 1,500 would not have occurred without the additional 1.3°C of warming caused by climate change.