India has threatened before, in other moments of rising tensions, to pull out of the Indus Waters Treaty, which both countries signed in 1960. If India follows through this time, it could restrict the flow of water that is used for most of Pakistan’s crop irrigation and human consumption. Agriculture represents one-fourth of the country’s economy.

By Aftab Ahmed and Charlotte Greenfield JAMMU, India/ISLAMABAD (Reuters) -India and Pakistan accused each other of launching new military attacks on Friday, using drones and artillery for the third day in the worst fighting between the nuclear-armed South Asian neighbours in nearly three decades.