NEW DELHI — A deadly attack on tourists in Indian-controlled Kashmir has again moved India and Pakistan closer to war as the two rivals downgraded diplomatic and trade ties, closed the main border crossing and revoked visas for each other’s nationals.

The long-simmering conflict in Kashmir, India, blew up on Tuesday, when Islamic Kashmir separatists killed 26 tourists and injured over a dozen others. The attack was the deadliest terrorist attack in India since the 2008 Mumbai attacks,

India's Prime Minister Narendra Modi says the gunmen behind a terrorist attack on tourists in the Kashmir region "will not be spared!"