For more than six decades, the Indus Waters Treaty has governed one of the most sensitive issues between India and Pakistan, the sharing of the waters of the Indus river system.
Signed in 1960 after nearly a decade of negotiations, the treaty has survived wars, confrontations and diplomatic crises between the neighbours. But its durability has increasingly come under strain, particularly over India's plans to develop hydropower projects on rivers and Pakistan's objections to those.
