Spraying pesticides on his parched vegetables one street away from the Indus River, Pakistani farmer Homla Thakhur is worried about his future. The sun is at its peak, the river is running very low, and India has vowed to cut supplies upstream after a deadly militant attack in Kashmir.

In the days since, tensions have risen dangerously between India and Pakistan, which have fought two of their three wars over Kashmir.

A day after the U.N. appealed for restraint following Tuesday's deadly attack in Indian-administered Kashmir, India reported an exchange of fire across the de facto border in the disputed region.