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, which killed 166 and injured hundreds more. The attack has left India reeling and marks the latest development in a conflict spanning decades. The conflict could have global repercussions, as India and Pakistan each possess hundreds of nuclear weapons.