The two nuclear-armed countries are at risk of descending into conflict after both ordered warplanes to carry out airstrikes in revenge attacks in recent days.
Pakistan carried out airstrikes and shot down two Indian jets on Wednesday, officials said, a day after Indian warplanes struck inside Pakistan for the first time since a war in 1971.
Pakistan Prime Minister Imran Khan is due to convene an emergency meeting of his nuclear weapons command authority on Wednesday to consider his options.
“You all know what that means,” a government spokesman said of the meeting.
Meanwhile, both countries have shut down their airspace for commercial airlines amid heightened tensions.
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