Sri Lanka, May 7 -- Islamabad International Airport has been placed under red alert, and Pakistan closed its airspace to commercial traffic, diverting three incoming flights as a precaution amid fears of potential Indian hostile action.Flights affected included a Qatar Airways service from Doha, a Saudi Arabian Airlines flight, and one operated by a private carrier.Airports across Pakistan, including Karachi, Lahore and Peshawar, were put on high alert.The immediate fallout saw the temporary shutdown of over 18 airports in India, including Srinagar and Leh, and the cancellation of over 200 flights by airlines such as Air India, IndiGo, and SpiceJet, affecting both domestic and international routes, with Qatar Airways also suspending fligh...