Indus Waters Treaty After the Hague Ruling: What Changed and What Did Not

A five-member court in The Hague has ruled that the 1960 Indus Waters Treaty is still in force, and India has said it does not accept the court’s authority. That leaves a legal ruling without an obvious way to enforce it, in a dispute that Pakistani officials describe in existential terms and Indian officials frame around security. This explainer sets out the ruling, the reactions and the practical gaps, from the court’s own press release and regional and international reporting. For our earlier news item, see India warns Pakistan on Indus Waters Treaty threat.

What the court decided

In an award dated August 31, 2026, the Court of Arbitration in the Indus Waters Western Rivers Arbitration found that India’s April 2025 decision to hold the treaty ‘in abeyance’ could only be read as a claim that the treaty is suspended or terminated. It examined the grounds India had cited publicly and, in a unanimous decision, found none could justify suspension or termination. The treaty, it said, ‘remains fully in force.’

The same day it issued an order on interim measures concerning the Ratle hydroelectric plant. According to The Indus Compass, the court barred India from completing the dam wall and power intake structures beyond specified levels for 90 days after a final decision by the neutral expert, which is expected in July 2027.

How the dispute began

India announced in April 2025, after an attack on tourists in Indian-administered Kashmir that killed 26 civilians, that the treaty would be held in abeyance ‘until Pakistan credibly and irrevocably abjures its support for cross-border terrorism,’ as quoted in the court’s press release. Pakistan denies backing the attack. Pakistan applied in March 2026 for the court to rule on the treaty’s status, and hearings took place at the Peace Palace on April 26 to 28 with only Pakistan present, Al Jazeera reported.

The two governments’ positions

Pakistan’s Foreign Minister Ishaq Dar welcomed the award, saying it ‘decisively rejects India’s unlawful attempt’ to place the treaty in abeyance. India’s Ministry of External Affairs rejected the ruling, called the court ‘illegally constituted’ and said abeyance ‘remains in force,’ according to Al Jazeera. India has not accepted the court’s jurisdiction in this case.

On September 30, Dar wrote to UN Secretary-General António Guterres, his second letter on the issue after one dated June 17, asking the Security Council to call on India to implement the treaty and the court’s awards and to refrain from any action that might ‘stop, divert, restrict, manipulate or otherwise interfere’ with water flows, The Express Tribune reported. The letter says 250 million people live in the Indus Basin, per The Indus Compass.

Enforcement and data gaps

Legal experts quoted by Al Jazeera, including Ahmer Bilal Soofi and Sikander Ahmed Shah, said India’s absence does not undermine the award, but both acknowledged there is no formal enforcement mechanism comparable to a Security Council order. Soofi said the award gives Pakistan ‘a very categorical, clear legal basis to consider countermeasures,’ while noting that Pakistan’s options beyond that are largely diplomatic.

Cooperation machinery has also stalled. According to Al Jazeera, the Permanent Indus Commission, the joint body that runs the treaty day to day, has not met since May 2022. Pakistan says India has stopped sharing routine river-flow data and blocked site inspections since 2023, both of which the treaty requires. These are Pakistan’s assertions; India has not publicly confirmed them in the sources we reviewed.

Rhetoric versus hydrology

Pakistani leaders have used strong language. Al Jazeera reports that Prime Minister Shehbaz Sharif said on August 13 that ‘every single drop of Pakistan’s water is our red line,’ as reported by the state-run Associated Press of Pakistan, and warned of a ‘crushing response.’ Former foreign minister Bilawal Bhutto Zardari called the dispute ‘the weaponisation of water.’

Water expert Hassan Abbas offered a more limited reading to Al Jazeera: ‘I don’t think there is an existential threat as such right now.’ He said India’s built storage on the Chenab is roughly 1 million acre-feet and its dams are run-of-river plants with little storage, so ‘once their dams are full, they have no option but to let water go.’ He also criticized Pakistan’s own focus on new mega-dams over irrigation efficiency. These are the views of one expert and should be read alongside the officials’ statements.

Why it matters

The case is the first time an international court has ruled on whether India’s abeyance is legally valid, per Al Jazeera, which makes it a reference point for other shared-river disputes. It also sits beside a fragile India-Pakistan ceasefire that Pakistani officials link to the water question. Our Geopolitics section follows both tracks, along with Pakistan’s wider security ties, such as the Mecca pact activation involving Pakistani and Turkish forces.

What to watch

Watch for the neutral expert’s decision expected in July 2027, any meeting of the Permanent Indus Commission, further letters to the UN and any change in India’s data-sharing. Each can be checked against public documents.

Sources

• Permanent Court of Arbitration press release: Indus Waters Western Rivers Arbitration (Aug. 31, 2026)
• Al Jazeera: Pakistan wins Indus waters battle at The Hague, but India threat remains (Sept. 1, 2026)
• The Express Tribune: Pakistan urges UNSC to press India over IWT
• The Indus Compass: Pakistan asks UN to press India over Indus Waters Treaty
• Court of Arbitration: Award on the Status of the Indus Waters Treaty (redacted PDF)

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