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

The April 22 attack in India's Jammu and Kashmir territory was the deadliest on civilians in nearly two decades in the country.But the area has long been a source of tension between India and Pakistan.

An attack on tourists in India's Himalayan territory of Kashmir this week sparked a new crisis between nuclear armed South Asian neighbours India and Pakistan, with New Delhi blaming militants with "cross-border linkages" for the killings.