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.

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.

India and Pakistan have intensified their hostilities over the hotly contested Kashmir region following a massacre of 26 mostly Indian tourists, which New Delhi linked to Pakistan