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,

Members of Jammu and Kashmir Awami National Conference shout slogans during a protest after a deadly attack that killed 26 people, mostly tourists, in Srinagar, Indian controlled Kashmir, Thursday, April.

The Pakistani government said that if India followed through on a threat to block rivers it would take it as “an act of war.”