What steps have India and Pakistan taken against each other after the Kashmir attack

NEW DELHI - An attack on tourists in Indias 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.

Here is a look at the tit-for-tat measures the two countries have announced in the aftermath of the violence.

WHAT HAPPENED?

Suspected militants opened fire in the Baisaran Valley, a popular tourist attraction in Kashmirs Pahalgam area, on Tuesday afternoon, killing 26 people and wounding several others before fleeing into the surrounding pine forests.

WHY DOES INDIA SAY PAKISTAN IS INVOLVED?

The two countries both claim Kashmir in full, but rule it in part. India has long accused Pakistan of helping Islamist separatists who have battled security forces in its part of the territory - accusations Islamabad denies.

Indian officials say Tuesdays attack had cross-border linkages. Kashmiri police, in notices identifying three people involved in the violence, said two of them were Pakistani nationals. India has not elaborated on the links or shared proof.

HOW HAS PAKISTAN RESPONDED?

Pakistan said Indias accusations were made without any credible investigation or verifiable evidence, saying they are frivolous and devoid of rationality.

It has also called on India to refrain from a reflexive blame game and to take responsibility for its failure to provide security to people.

WHAT MEASURES HAVE THE COUNTRIES TAKEN?

* Both countries have closed the only open land border they share, and suspended special South Asian visas that enabled people to travel between them.

* They have declared each others defence advisors in missions in New Delhi and Islamabad persona non grata, and reduced the strength of their embassies.

* India has suspended a critical treaty that regulated the sharing of water from the Indus River and its tributaries. Pakistan