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.

Relations between India and Pakistan are cratering following a deadly attack in the disputed Himalayan region of Jammu and Kashmir that left more than two dozen tourists dead.

Days after the brutal killing of at least 26 people, including tourists, in Pahalgam in the Kashmir Valley, several parts of India witnessed candle marches and protests to mourn the deaths of those killed and to express anger at the terrorist attack.