A River of Tension: India’s IWT Suspension Unleashes a Dangerous Precedent in Parched South Asia

Experts warn weaponization of water treaties after Pahalgam attack threatens to unravel regional water diplomacy, drawing in Afghanistan and Iran into a widening hydropolitical crisis.

In a move with seismic implications for South Asian stability, India’s decision to suspend the Indus Waters Treaty (IWT) following the Pahalgam attack has done more than escalate tensions with Pakistan. It has thrown a fragile ecosystem of transboundary water agreements into peril, threatening to turn life-giving rivers into tools of conflict and setting a dangerous precedent for non-traditional security responses across the region.

The 1960 IWT, long hailed as a rare diplomatic success between the nuclear-armed rivals, is now in abeyance. While New Delhi frames this as a necessary security response and a chance to renegotiate outdated terms, the unilateral suspension sends a chilling message: water, the region's most vital shared resource, is now a weapon on the bargaining table.

"This isn't just an India-Pakistan issue anymore," explained Dr. Anjali Verma, a senior fellow at the Institute for Water Security. "By weaponizing the IWT, India has effectively declared that hydrological control is a legitimate instrument of coercive diplomacy. This logic is contagious in a basin as interconnected and stressed as South Asia's."

The contagion is already spreading. The crisis amplifies long-simmering disputes across the region: the uncertainty around the expiring Ganges Treaty with Bangladesh, the frozen Teesta River deal, China’s massive dams on the Yarlung Zangbo (Brahmaputra), and Iran’s bitter disputes with Afghanistan over the Helmand River waters. Together, they paint a picture of a regional order crumbling under combined hydrological and political stress.

Afghanistan: The New Front in the Water Wars

Most alarmingly, India’s suspension of the IWT has dovetailed with its strategic outreach to Afghanistan’s Taliban regime, directly inserting a new upper-riparian player into the fray. Following high-level talks, Kabul has announced, with vocal Indian support, plans for a major hydroelectric dam on the Kunar River, a critical tributary that feeds Pakistan’s Indus system.

Pakistan, which has no water-sharing agreement with Afghanistan despite nine shared river basins, views this as an existential threat. Defence Minister Khawaja Asif has warned the Taliban, stating Kabul “cannot disregard Pakistan’s water rights,” and hinted at "pressure tools." This new India-Afghanistan axis on water infrastructure has effectively opened a second hydrological front against Pakistan, dramatically raising the stakes.

A Region Parched and on Edge

The political maneuvering unfolds against a backdrop of severe climate-induced distress. Afghanistan is gripped by one of its worst droughts in decades, devastating farmlands and compounding a dire humanitarian crisis. In Kabul, residents in districts like District 5 report wells running dry and sporadic government water supply. Iran, downstream from Afghanistan, is in a vehement dispute with the Taliban, accusing it of blocking water flow from the Helmand River and pleading for releases to address critical shortages in cities like Mashhad.

"This is the tragic irony," said climate security analyst Mark Chen. "While governments jockey for strategic advantage using water, their own populations are suffering acute scarcity. The politics of control are completely divorced from the reality of climate change, which is melting Himalayan glaciers and creating erratic monsoons that will make cooperation more essential than ever."

A Fractured Future

The unilateral suspension of the IWT now threatens to become a blueprint. If treaties can be set aside for security grievances, what stops China from acting unilaterally on the Brahmaputra, or Iran taking stronger action against Afghanistan? The precedent undermines the very foundation of water diplomacy—the painstaking building of trust through institutional mechanisms and dialogue, as seen in the Lancang-Mekong cooperation.

The weakening of water diplomacy in South Asia, analysts conclude, is no longer just a regional threat. In a world facing a climate crisis, the collapse of cooperative water management in one of the planet's most populous and vulnerable regions endangers global climate security. The future of South Asia’s rivers now hangs not on engineering alone, but on a rapidly diminishing political imagination—the ability to see water as a shared lifeline rather than the next casus belli.

Jill Andrious is an experienced analyst and commentator on South Asia and the Middle East. The views expressed in this article are solely those of the author and do not necessarily reflect the editorial stance of The Kabul Tribune.