India’s recent actions concerning the Indus River Treaty have drawn sharp attention to a tactic as old as warfare itself: using water as a weapon. As reported by The Times UK, Indian Prime Minister Narendra Modi’s declaration that “India’s water will flow for India’s benefit” has sparked alarm in Pakistan and revived a centuries-old geopolitical strategy—controlling rivers to exert pressure on rivals.
The suspension of the Indus River Treaty, which since 1960 has governed the use and distribution of the Indus and its tributaries between India and Pakistan, marks a significant escalation in bilateral tensions. India’s move to temporarily halt water flow into Pakistan from the Chenab River, a key tributary of the Indus, is being viewed not just as a technical or environmental issue, but a strategic maneuver with deep historical parallels.
From ancient Assyria to modern Sudan, rivers have been used as tools of war and leverage. As The Times UK noted, King Hezekiah of Judah once dammed fountains to deprive Assyrian invaders of water. Likewise, in ancient Mesopotamia, the governor of Umma diverted rivers to weaken enemies, earning infamy carved into stone. Today, Modi’s assertion that Indian waters should serve Indian interests follows this same strategic lineage.
Pakistan, for its part, has expressed grave concern. Prime Minister Shehbaz Sharif has warned that altering the river’s flow could devastate Pakistani agriculture, which is heavily dependent on the Indus system. Experts caution that even a temporary suspension of flow can jeopardize crop cycles, while sudden releases can cause floods.
Peter Gleick of the Pacific Institute in California, who maintains a comprehensive historical database of water-related conflicts, told The Times UK that weaponizing water is increasingly common. “There’s a long history of the use of water as a weapon, target, or trigger of conflict,” he said. Gleick noted a 50% increase in such incidents in 2023 compared to the previous year.
This alarming trend is not confined to South Asia. Across the world, similar tensions are unfolding. Ethiopia’s construction of the Grand Renaissance Dam on the Nile has provoked diplomatic protests from Egypt, which views unimpeded access to the river as existential. In war-torn Sudan, control over reservoirs has become a matter of life and death, with militia groups cutting off water to hostile populations.
Closer to home for India, the risk of setting a dangerous precedent looms large. China, which controls rivers flowing into India, could potentially respond in kind. Hydropower expert Peter Mason warns that the sheer volume of Indian dam infrastructure gives New Delhi the technical ability to regulate Pakistan’s water supply—to either starve or flood it.
Such power, even if not exercised, can significantly alter the strategic balance between nations. As with Turkey’s control over the Tigris and Euphrates affecting Syria and Iraq, or Ethiopia’s dominance over the Nile’s headwaters impacting Egypt, the upper riparian always holds a latent advantage.
Yet, history has shown that playing with the flow of rivers is a perilous game. Former U.S. President Donald Trump starkly warned in 2020 that Egypt might “blow up” Ethiopia’s dam if its concerns were not addressed, underscoring just how high the stakes can become when water politics turn hostile.
What began as a colonial-era agreement under World Bank mediation now faces its toughest test. With climate change intensifying and regional rivalries sharpening, the ancient tactic of river control is finding new relevance. As Churchill once wrote during his campaign on the Nile, “It is the great melody that recurs throughout the whole opera… the cause of the war: the means by which we fight; the end at which we aim.”
