On 26 August 2026, collapsing rock and ice beneath a Himalayan glacier sent water and debris through Nepal’s Bhotekoshi–Trishuli river system. By 1 September, Nepal had confirmed 987 deaths and 3,916 missing; China reported another 16 deaths and 546 missing in Tibet. Approximately 900 workers were initially missing at twelve hydropower sites. Damage affected more than 12% of Nepal’s electricity-generating capacity.
The distributional injustice is clear. Nepal produced less than 0.03% of global carbon dioxide emissions in 2021. In 2024, its emissions were 0.63 tonnes per person, compared with 13.59 tonnes in the United States: an American therefore emitted roughly twenty-two times more. Yet Nepal has suffered greatly from the disaster and the preliminary reconstruction bill is $4–5 billion. Against its 2025 GDP of $45.49 billion, the upper estimate equals 11% of annual economic output.
Prevention exposed weaknesses in transnational and global governance. A private telephone warning gave one school only fourteen minutes to evacuate more than 900 pupils. Nepal and China had discussed glacier monitoring in May but lacked a comprehensive cross-border warning system when the flood originated near Tibet (part of China’s sovereign territory).
American retrenchment also matters, although causation cannot be proved. DOGE-led reductions terminated eight US-supported disaster-risk programmes in Nepal during 2025. They included SERVIR, a USAID–NASA partnership using satellite data for flood forecasting, glacier inventories and dangerous-lake mapping. The programme could not necessarily have predicted this collapse, but its removal reduced available monitoring expertise. Washington subsequently offered $500,000 in emergency assistance: only 0.01% of Nepal’s upper reconstruction estimate. This supports the realist interpretation that states act principally in their own amoral self-interest, regardless of the impact on others.
On 1 September, Nepal made its first request to the Fund for Responding to Loss and Damage, a UNFCCC mechanism agreed in 2022 at COP27 in Egypt. By November 2025, states had pledged only $817 million to the fund, while estimated annual developing-country loss-and-damage needs were approximately $395 billion. Nepal’s possible $5 billion loss alone is more than six times the fund’s pledged resources.