Rivers of Discord: The Indus Waters Treaty and the Brewing Crisis in South Asia
On April 22, 2025, the peaceful valley of Pahalgam in Indian-administered Kashmir witnessed a violent incident that soon affected South Asia’s already fragile geopolitical environment. A militant assault claimed the lives of 28 tourists and injured many others.
After the attack, India directly blamed Pakistan and announced the suspension of the Indus Waters Treaty. For more than six decades, this treaty had remained a rare symbol of cooperation between two nuclear-armed rivals. Its sudden suspension shocked Islamabad and created concern in regional and global diplomatic circles.
At the centre of this crisis is water, an increasingly scarce and weaponizable resource. As climate change increases water stress across the subcontinent, India’s move threatens to turn a treaty once considered a model of transboundary cooperation into a new field of confrontation.
For Pakistan, the implications are serious. The country’s agriculture, energy production, food security, and economic survival are closely linked with the Indus River system. In this context, India’s decision appears not only irresponsible but also strategically destabilizing and morally unacceptable.
The Indus Waters Treaty: An Architecture of Fragile Peace
The Indus Waters Treaty was brokered by the World Bank and signed in 1960. It is considered one of the most comprehensive and durable water-sharing agreements in the world.
The treaty was created after the 1947 Partition, which divided the Indian subcontinent but left the vast Indus Basin shared between India and Pakistan.
Under the treaty, the three Eastern rivers were allocated to India:
- Ravi
- Beas
- Sutlej
The three Western rivers were reserved for Pakistan:
- Indus
- Jhelum
- Chenab
India was granted limited rights over the Western rivers for non-consumptive uses such as hydropower generation.
This arrangement ensured that Pakistan received more than 80% of the basin’s annual water flow. This guarantee was extremely important for Pakistan as a downstream country whose agriculture, food supply, and urban survival depend heavily on these rivers.
Some critics have described the Indus Waters Treaty as a “hydrological divorce” rather than true cooperation. However, despite wars, border clashes, and diplomatic tensions, the treaty continued to function.
It created mechanisms for dispute resolution, data sharing, and project evaluation. India’s suspension now threatens to weaken even this last remaining structure of institutional cooperation.
Pakistan’s Hydrological Dependence: A National Lifeline
Few countries in the world are as dependent on a single river system as Pakistan. Nearly 90% of Pakistan’s population lives within the Indus Basin.
Pakistan’s agricultural sector uses around 94% of the country’s water withdrawals. It contributes about 23% to GDP and employs more than 38% of the labour force.
Pakistan’s major hydropower projects also depend on Indus waters, including:
- Tarbela
- Mangla
- Neelum-Jhelum
These hydropower plants produce more than 20% of Pakistan’s national electricity.
Despite this strong dependence, Pakistan’s water infrastructure remains underdeveloped. Its water storage capacity is around 10% of annual flow, which is far below the global average.
With climate change increasing the chances of both floods and droughts, any disruption in river flow can become a national emergency for Pakistan.
In this context, India’s suspension of the Indus Waters Treaty becomes a direct challenge not only to Pakistan’s legal rights but also to its human security and economic survival.
India’s Strategic Calculus and Legal Limits
India has tried to justify the suspension of the treaty by referring to the doctrine of “rebus sic stantibus.” This principle in international law allows a treaty to be modified or terminated if fundamental circumstances change.
India claims that Pakistan’s alleged support for cross-border militancy has changed the basic assumptions of the treaty.
However, the Vienna Convention on the Law of Treaties, 1969, clearly states in Article 62 that a fundamental change of circumstances cannot be used as a reason to withdraw from treaties that establish boundary regimes or permanent arrangements.
The Indus Waters Treaty falls within this category because it created a long-term water-sharing arrangement between India and Pakistan.
The International Court of Justice also limited the use of this doctrine in the Gabcikovo–Nagymaros case in 1997. The court made it clear that unilateral withdrawal cannot be justified if it endangers regional stability or violates environmental obligations.
Therefore, India’s legal justification lacks strong precedent and legitimacy.
India’s Operational Limitations
India’s practical ability to block or divert Pakistan’s share of water is also limited.
The Indus Waters Treaty restricts India’s storage rights on the Western rivers. Most of India’s hydropower projects on these rivers are run-of-the-river projects. These are designed to generate electricity without storing large amounts of water.
Projects such as the Kishanganga Dam have already faced international arbitration and years of legal disputes. Any future expansion would require major investment and long timelines.
However, even limited actions can create problems for Pakistan. These may include:
- Stopping data sharing
- Delaying joint inspections
- Mismanaging flood releases
- Creating uncertainty in water planning
Such tactical disruptions may not look as dramatic as blocking a river, but they can seriously affect Pakistan’s water planning and national resilience.
Weaponizing Water: A Dangerous Precedent
India’s suspension of the Indus Waters Treaty marks the first time a signatory has attempted to politicize water flows in South Asia.
Water is not like trade, visas, or diplomatic engagement. It is a lifeline. Using water as pressure or punishment against a downstream neighbour damages the entire structure of global water-sharing norms.
Pakistan’s concerns are not exaggerated. Indian commentators have often discussed the idea of using water as a weapon, especially after attacks blamed on groups operating from Pakistan.
In 2016, after the Uri attack, Indian Prime Minister Narendra Modi said:
“Blood and water cannot flow together.”
Although this rhetoric had not fully turned into action until now, the suspension of the treaty shows a dangerous policy shift from deterrence to coercion.
If India begins manipulating the flows of rivers like the Jhelum or Chenab, Pakistan could interpret such actions as hostile moves. This could increase the risk of military escalation.
Under the laws of armed conflict, deliberate targeting of civilian water supply infrastructure can be considered a war crime. If Pakistan responds through diplomatic, cyber, or military means, the situation could quickly move beyond control.
The Regional and Global Repercussions
India’s unilateral suspension of the Indus Waters Treaty also affects its relations with other neighbours.
Countries such as Nepal and Bangladesh have already expressed concerns about India’s hydro-hegemony and upstream dam-building. The suspension of a globally respected treaty will strengthen the perception that India uses its riparian position as a tool of dominance rather than cooperation.
The issue also has implications for India’s relationship with China.
The headwaters of the Indus and Brahmaputra are located in Tibet, which is under Chinese control. China has already increased dam-building on the Yarlung Tsangpo, also known as the Brahmaputra, and has withheld data sharing during important flood seasons.
If India sets a precedent by weakening transboundary water agreements, it will lose moral ground when China follows a similar approach.
India’s image as a responsible regional power and aspiring global leader is also at risk. India has often presented the Indus Waters Treaty in forums such as the United Nations, BRICS, and the Shanghai Cooperation Organisation as proof of its commitment to a rules-based order.
Suspending the treaty weakens that narrative. It may also affect India’s bid for permanent membership in the United Nations Security Council and its role in climate negotiations, where water diplomacy is becoming increasingly important.
Pakistan’s Diplomatic Options: From Legal Forums to Strategic Deterrence
Pakistan must respond with precision, not panic.
First, Islamabad should formally challenge India’s suspension through the dispute-resolution mechanisms available under the Indus Waters Treaty, including the International Court of Arbitration.
Second, Pakistan should build international support from key actors and forums, including:
- World Bank
- China
- Organisation of Islamic Cooperation
- Global South platforms
- International legal and environmental forums
Third, Pakistan must invest in long-term water resilience. This includes:
- Expanding water storage capacity
- Modernizing irrigation systems
- Improving flood management
- Using climate adaptation funds
- Strengthening water governance
At the same time, Pakistan must treat water security as a national security priority. Water defence should be integrated into the country’s broader strategic doctrine.
This should include:
- Hydrological early warning systems
- Protection of water infrastructure
- Diversification of energy sources
- Better coordination between civilian and security institutions
- Strategic deterrence against threats to water infrastructure
Conclusion: The Future of the Indus and the Fate of the Region
The Indus Waters Treaty once symbolized the possibility of rational governance in an irrational neighbourhood. India’s sudden suspension threatens to turn rivers of life into fault lines of war.
New Delhi may see this move as a strategic tool to pressure Islamabad. However, it risks destroying a fragile peace framework that has survived wars, nuclear tensions, and proxy conflicts.
Pakistan must defend its legal and moral rights under the treaty. It must also present the issue as a global precedent for water security in an age of climate emergency.
The international community, especially mediators like the World Bank and guardians of international law, must intervene before the region moves toward hydro-hostility.
In the end, this issue is not only about water rights. It is about the future of peace, prosperity, and coexistence in South Asia.
The Indus must remain a river of life, not a current of conflict.