India carried out airstrikes overnight against targets in Pakistan that it said were linked to recent terrorist attacks in Kashmir in which Islamist militants killed 26 people, an escalation that marks the most intense fighting in the hotly contested border region in more than 20 years.

Pakistan has vowed to “settle the score” against India after a missile attack it labeled an “act of war.” Here’s what to know.

NEW DELHI: India and Pakistan exchanged heavy artillery fire along their contested frontier on Wednesday (May 7) after New Delhi launched deadly missile strikes on its arch rival, in the worst violence between the nuclear-armed neighbours in two decades.