Collapse of Indus Waters Treaty: A Warning Shot for Bangladesh

India’s recent decision to suspend the long-standing Indus Waters Treaty (IWT) with Pakistan has understandably heightened concerns about regional stability between two nuclear-armed nations. However, the ramifications extend well beyond the India-Pakistan bilateral sphere. This development draws attention to a broader strategic shift in South Asia, where critical resources like water may increasingly be used as instruments of political influence.

For Bangladesh — a downstream nation reliant on rivers that originate in India — the suspension signals a troubling example. If water cooperation can be disrupted in one instance, the risk of similar actions affecting other riparian relationships, including those with Bangladesh, becomes a legitimate concern.

The Indus Waters Treaty, signed in 1960 under the auspices of the World Bank, has long been hailed as a model for successful conflict resolution over shared rivers. It allocated control of three eastern rivers (Ravi, Beas, Sutlej) to India, while reserving the waters of three western rivers (Indus, Jhelum, Chenab) for Pakistan. Despite wars, skirmishes and political crises, the treaty survived.

However, with its abrupt suspension, India has torn up decades of precedent, sending a clear message: in the new geopolitical reality, even lifelines like water can be weaponized. The suspension allows India to stop providing flood data to Pakistan, cease consultations on hydropower projects, and theoretically, halt or divert flows during critical periods — particularly the dry season. Although India currently lacks the reservoir infrastructure to instantly block massive river flows, the precedent has been set. Infrastructure can be built. Strategies can change.

For Bangladesh, this is not a theoretical risk. It is an immediate and existential one. Over 90% of Bangladesh’s surface water originates outside its borders, primarily from India. The Ganges, Brahmaputra, Teesta and Meghna rivers are the arteries of Bangladesh’s agrarian economy and ecological health. If upstream India were to manipulate water flows, Bangladesh would face catastrophic consequences.

The Farakka Barrage offers a historical lesson. Operational since 1975, Farakka was built to divert Ganges water into India's Hooghly River to flush out silt and maintain navigability at Kolkata port. Despite multiple agreements — including the 1996 Ganges Water Sharing Treaty — the dry-season flows remain inadequate, and Bangladesh’s southwestern districts continue to suffer. Moreover, the ongoing deadlock over the Teesta River has further soured relations. For more than a decade, Bangladesh has awaited the signing of a water-sharing agreement for the Teesta. Meanwhile, India has continued expanding irrigation canals and projects along the Teesta.

Given this track record, Dhaka can no longer assume that cordial diplomatic ties will translate into guaranteed water rights. Relations between Bangladesh and India, while officially described as historic and warm, have come under strain over several issues. Growing incidents of border killings by India’s Border Security Force (BSF) have further eroded public trust in India’s intentions.

In this context, India’s suspension of the Indus Waters Treaty represents a watershed moment — punishing Pakistan today, perhaps, but laying down a strategic principle that could be applied elsewhere tomorrow. The weaponisation of water is now part of South Asia’s political toolkit. Bangladesh must treat this development with the seriousness it demands. In a future conflict or diplomatic standoff, water could easily be leveraged as a tool of coercion. Even without overt hostilities, upstream control could be used subtly.

The long-term consequences would be devastating. Nor would the damage be confined to agriculture. Bangladesh’s energy security, too, is increasingly tied to water. Future hydropower projects, urban water supply, industrial production — all depend on reliable river flows. In the context of global climate change, where Himalayan glacier melts, erratic monsoons and sea-level rise are already straining South Asia’s hydrological systems; any deliberate upstream manipulation would be doubly devastating.

What then should Bangladesh do? First and foremost, Dhaka must elevate water security to the highest levels of national strategy, treating it with the same urgency accorded to defence or food security. Future water-sharing agreements must be legally binding, internationally guaranteed and based on equitable and reasonable utilisation principles enshrined in international law. Bangladesh must push for tripartite or multilateral negotiations where possible, involving Nepal, Bhutan and even China to counterbalance India’s upstream dominance.

Secondly, Bangladesh must invest heavily in domestic water resilience. Rainwater harvesting, groundwater recharge, river dredging and conservation agriculture must become national priorities. Cities must move towards wastewater recycling and better urban water management. Coastal regions, already facing salinity intrusion, need urgent attention in terms of alternative water sourcing and climate-adaptive infrastructure.

Thirdly, Dhaka must diversify its diplomatic strategies. While maintaining good relations with India remains crucial, Bangladesh should simultaneously deepen its strategic engagements with other South Asian countries and major global powers to build diplomatic leverage. Alignments with regional initiatives focusing on river basin management could offer additional platforms for advocacy.

Fourthly, Bangladesh must build national capacity for independent hydrological data gathering. Satellite monitoring, river flow measurement stations and indigenous flood modelling systems must be developed to reduce reliance on upstream countries’ data, which can be weaponised during tensions.

Finally, there must be a broad national awakening to the dangers ahead. Water security cannot remain an issue confined to technocrats and diplomats. It must become part of the national consciousness. Universities, civil society and the media must mobilise public opinion and hold policymakers accountable for proactive action.

This is more than a treaty dispute. The suspension of the Indus Waters Treaty is a clear signal: water, the lifeblood of our land, can be turned into a weapon. For Bangladesh, this is deeply personal. Our rivers are not just sources of irrigation — they are part of who we are. They feed our people, nurture our soil, and flow through the heart of our culture. If their flow is cut off or manipulated, what we lose is not just water, we lose stability, dignity, and control over our future. This is a fight for sovereignty. And we must face it with clarity, courage, and unity before it's too late.

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The writer is an academic, journalist and political analyst.

He can be reached at [email protected]