Tensions escalate between India and Pakistan following deadly attack in Kashmir

People participate in a candlelight protest, a day after an attack killed at least 26 people, most of them tourists (Mukhtar Khan/AP)

Tensions between rivals India and Pakistan were high on Thursday as New Delhi mounted a diplomatic offensive against Islamabad, blaming it for a deadly attack that killed 26 people, mostly tourists, in disputed Kashmir.

India accused Pakistan of supporting “cross-border terrorism” on Wednesday night and imposed diplomatic measures, including downgrading diplomatic ties, suspending a key water-sharing treaty and closing the main land border crossing with Pakistan.