South Asia’s water faultlines

The 2025 war between India and Pakistan did not begin with guns or missiles—it began with water.

Sparked by skirmishes over dam construction and reduced river flows, the conflict exposed a deeper vulnerability at the heart of South Asia: its disjointed, adversarial relationship with the Indus River system. For decades, the region treated its rivers as spoils to be divided, contained, and exploited—overlooking their potential as bridges of peace, prosperity, and strategic autonomy.

The legacy of the 1960 Indus Waters Treaty (IWT), conceived in a Cold War mindset, survives as a rigid, transactional agreement. It awarded India full rights over the eastern rivers and Pakistan the western ones, thereby embedding separation into a system that was once deeply interconnected. The rivers no longer flow as ecosystems or civilizational lifelines—they are now lines on a map, entangled in suspicions and weaponized by infrastructure.

The 2025 confrontation showed the dangerous consequences of this mindset. As rivers dried downstream and flash floods intensified upstream, livelihoods suffered, food security wavered, and energy production faltered. Mistrust escalated into military brinkmanship. External powers exploited these divisions to insert themselves more deeply into South Asia’s internal affairs.

But within this crisis lies a chance to reimagine the region’s future. For millennia, South Asian societies treated rivers as sacred entities—not simply for ritual, but as sources of abundance, movement, and cohesion. Indus, once a cradle of civilization, was also a corridor of commerce, culture, and diplomacy. Reinvoking this worldview offers a new strategy—treating rivers not as borders but as bonds.

By shifting focus to ecological restoration, basin-wide navigation, and cooperative water management, South Asia can turn its shared waters into a foundation for strategic autonomy. Reconnecting rivers with communities, economies, and cultures could re-knit a fragmented region—unlocking trade, ensuring food and energy security, and reducing reliance on foreign alliances.

This means moving beyond the IWT’s zero-sum framework. A new understanding on rivers must reflect climate realities, ecological needs, and the potential for multilateral cooperation. Infrastructure must prioritize resilience, not control. Communities should be empowered as river stewards, not sidelined by central commands. And diplomacy must move from reactive protest to proactive engagement.

The Indus can reclaim its role as South Asia’s lifeline—if allowed to flow freely, purposefully, and inclusively. In a region fragmented by conflict and climate stress, water security is inseparable from national security. Reimagining the river as a unifying force, not a dividing line, offers a path to food, energy, and strategic autonomy. Shared stewardship of the Indus is South Asia’s strongest defense against external interference and internal instability.

Strategic autonomy in the 21st century cannot be achieved through missiles or deterrence alone. It will be built on food grown from healthy rivers, power generated from shared flows, and trust cultivated through joint stewardship. The 2025 war has reminded South Asia what is at stake. The future lies not in dividing rivers—but in letting them unify a divided region.

—The writer is a political analyst, based in Islamabad.

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