India and Pakistan are again teetering on the brink of conflict over disputed Kashmir. Here's why

NEW DELHI (AP) — Adeadly attack on touristsin Indian-controlled Kashmir has again movedIndiaand 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.Pakistan has denied it was behindTuesday’s attackthat killed 26 mostly Indian tourists at a popular scenic spot in the Himalayan region, whereIndiaclaimed it restored a sense of calm despitea decadeslong rebellion.A previously unknown militant group calling itself Kashmir Resistance has claimed responsibility for the attack.Here’s what to know about an escalation in tensions between the two nuclear armed rivals. They have fought two of their three wars over Kashmir, which is split between them and claimed by both in its entirety.What’s at the heart of the dispute?Ties betweenIndiaand Pakistanhave been shaped by conflict, aggressive diplomacy andmutual suspicion,most notably in their competing claims over the stunning Himalayan region of K...