The world's first drone war between nuclear-armed neighbours has erupted in South Asia. On Thursday, India accused Pakistan of launching waves of drones and missiles at three military bases in Indian territory and Indian-administered Kashmir - an allegation Islamabad swiftly denied.

India fired attack drones into Pakistan on Thursday, wounding four soldiers, the Pakistani military said. India, meanwhile, accused its neighbor of attempting its own attack, as tensions soared between the nuclear-armed rivals.

Indian Prime Minister Narendra Modi had convened on Thursday a meeting of his secretaries to discuss “national preparedness."