Following Tuesday's massacre of 26 mostly Indian tourists, hostilities have intensified between India and Pakistan over the hotly contested Kashmir region.

For the first time, India on Wednesday suspended the World Bank-mediated Indus Waters Treaty of 1960, which ensures water for 80% of Pakistani farms.

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.