A water crisis is brewing between South Asia's arch-rivals India, Pakistan

Pakistan, India and Afghanistan are among the world's eight most water-stressed countries

Women and children walk miles each day in search for water in a crowded, downtrodden district of Pakistan’s financial capital, Karachi — a scene repeated in cities throughout the country.

Across the border in India, government research indicates about three-quarters of people don’t have drinking water at home and 70 per cent of the country’s water is contaminated.

 As rivers and taps run dry, water has the potential to become a major flashpoint between arch-rivals India and Pakistan. Both have repeatedly accused each other of violating the World Bank-brokered 1960s Indus Waters Treaty that ensures shared management of the six rivers crossing