The Court of Arbitration’s latest ruling on the Indus Waters Treaty deserves attention far beyond Pakistan and India. On August 31, the Court unanimously reaffirmed that the Treaty remains fully in force and rejected the grounds advanced by India for placing it in “abeyance”. It also imposed interim restrictions on specified construction at the Ratle Hydroelectric Plant while the Treaty’s adjudicatory processes continue.
The immediate legal consequence is straightforward: India remains bound by the obligations it accepted under the 1960 Treaty. The wider significance is, however, more consequential.
As water stress intensifies and upstream infrastructure expands, geographical control over rivers will increasingly create strategic leverage. The Court’s decision therefore arrives at an important moment. It establishes that physical advantage does not confer unlimited political discretion, and that binding obligations cannot be switched off through unilateral declarations.
There is another aspect of the decision with potentially wider consequences for international law. India explicitly linked the Treaty’s continued operation to its allegations of cross-border terrorism, declaring in April 2025 that the IWT would remain in abeyance until Pakistan “credibly and irrevocably” ended such support. The Court examined terrorism alongside the other grounds invoked publicly by India, including sovereignty, alleged material breach, changing circumstances and armed conflict. It found that none provided a legal basis for suspending or terminating the Treaty.
