Himalayan Geopolitics and Climate Change: Emerging Security Challenges, Transboundary Waters and Pathways for Regional Cooperation

Abstract

               The Himalaya is simultaneously a climatic system, a water tower, a biodiversity reservoir and one of Asia’s most strategically sensitive geopolitical spaces. Climate change is altering this strategic landscape by accelerating glacier loss, reducing seasonal snow persistence, destabilising permafrost, modifying river seasonality and increasing multi-hazard risks. These physical changes intersect with unresolved borders, transboundary rivers, hydropower ambitions, infrastructure expansion and unequal national capacities. This conceptual review examines how climate change is reshaping Himalayan geopolitics, with particular attention to the Hindu Kush Himalaya (HKH), India–China transboundary rivers, the Indus basin, and India’s hydropower relationships with Nepal and Bhutan. It synthesises authoritative evidence from ICIMOD, IPCC, the World Bank and official Government of India documents. ICIMOD reported in 2026 that HKH glacier ice-loss rates have doubled since 2000 and that regional snow persistence was 27.8 per cent below the long-term average, the fourth consecutive below-normal year. Nearly two billion people depend directly or indirectly on the major river basins originating in the HKH. The paper argues that climate change does not mechanically cause geopolitical conflict; rather, it acts as a risk multiplier that can intensify uncertainty around water, energy, disasters, infrastructure and border governance. At the same time, shared climatic exposure creates incentives for cooperation. The article proposes a climate-security framework centred on cryosphere monitoring, hydrological data sharing, early-warning systems, resilient hydropower, basin-level dialogue and scientific diplomacy. The future stability of the Himalaya will depend on whether states treat changing mountains primarily as strategic frontiers or increasingly as a shared ecological security system.