In a strong response to the Pahalgam terror attack, the Indian government has suspended the Indus Water Treaty (IWT) — a foundational water-sharing agreement between India and Pakistan. This dramatic move signals that terrorism will now have direct diplomatic consequences.

Here’s what the Indus Water Treaty is, how it works, and why Pakistan could suffer greatly if India halts cooperation.

What Is the Indus Water Treaty?

Signed in 1960 between India and Pakistan, with the World Bank as a mediator, the Indus Water Treaty governs the use of six rivers in the Indus River System:

• India received full control over three eastern rivers — Ravi, Beas, and Sutlej.
• Pakistan was given control over the three western rivers — Indus, Jhelum, and Chenab — despite these rivers flowing through India first.

India was allowed limited use of the western rivers for:

• Irrigation
• Hydropower (run-of-the-river projects with no significant storage)
• Navigation

In effect, Pakistan receives about 80% of the total water flow from the Indus system.

Why Was This Treaty Signed?

Pakistan feared that India, being upstream, could weaponize water in case of conflict. The treaty was a confidence-building measure, ensuring a stable and predictable water supply to Pakistan, especially vital for its agriculture and power generation.

Disputes Under the Treaty

Disputes like the Kishanganga and Ratle hydropower projects have led to friction:

• Pakistan accuses India of violating design and flow limits.
• India insists it follows treaty terms.
• Disputes are generally resolved through the Permanent Indus Commission, or by approaching the World Bank to appoint neutral experts.

Despite wars and tensions, India has honored the treaty for over six decades, even during peak conflict.

Why Is India Suspending It Now?

Following the terrorist attack in Pahalgam, India has taken a hard stance: No more business-as-usual with Pakistan until it "credibly and irreversibly" stops supporting terrorism.

Suspending the treaty means India could legally restrict or reduce water flow to Pakistan using its upstream advantage, within the bounds of the treaty — or seek to terminate or renegotiate the agreement altogether.

Why Pakistan Will Suffer If the Treaty Is Suspended

• Indus River is Pakistan’s lifeline: It supports irrigation, drinking water, and hydroelectricity.
• Agriculture in Punjab and Sindh provinces heavily depends on these waters.
• Major hydro projects are built on the Indus — power shortages will worsen if flows reduce.
• A water crisis could spark food insecurity, economic losses, and political instability.

In short: A treaty meant to ensure peace could now become a pressure point for change.

Final Thoughts

The Indus Water Treaty was once hailed as one of the world’s most successful transboundary water agreements. But with terrorism continuing to flow across borders, India has made it clear: even water, the most basic of lifelines, is not off the table when national security is at stake.