Pakistan called India's actions “irresponsible" and canceled visas for Indian nationals, suspended all trade with India and closed its airspace to Indian aircraft.

Relations between India and Pakistan are cratering following a deadly attack in the disputed Himalayan region of Jammu and Kashmir that left more than two dozen tourists dead, raising fears of military escalation between the nuclear-armed rivals.

Long-troubled relations between nuclear-armed rivals India and Pakistan rapidly worsened after gunmen targeting tourists killed 26 men in Indian-administered Kashmir. It was the deadliest attack on civilians in the disputed Himalayan territory in a quarter of a century.