Foremost among these actions is the suspension of the Indus Waters Treaty of 1960, effective immediately, pending what Pakistan's verifiable cessation of support for terrorist activities against India. The treaty guides cooperation on number of cross-border rivers.

Tens of thousands of police and soldiers fanned out across the region, which is claimed by both India and Pakistan, and erected checkpoints.

Twenty-six men were killed and 17 were injured when suspected militants opened fire at tourists in India's Jammu and Kashmir territory, police said.