Pakistani Prime Minister Imran Khan said Thursday he will return a captured fighter pilot to India, after Pakistan’s military shot down two fighter jets that entered into its airspace. Khan’s gesture is aimed at de-escalating tensions between the nuclear-armed neighbors, after India carried out airstrikes inside Pakistan Tuesday for the first time since 1971. The fighting has stoked fears of a nuclear exchange and has stranded thousands of travelers, after Pakistan closed its airspace to all domestic and international flights.