kyiv, July 7 -- Russia and Ukraine struck each other with hundreds of drones on Sunday, throwing Russian air travel in disarray, days after Moscow launched its largest aerial assault in the more than three-year-old war. Photos circulating on social media showed crowds huddling at Russian airports including key international hubs in Moscow and St Petersburg, as hundreds of flights were delayed or cancelled due to Ukrainian drone strikes on Saturday and overnight, according to Russia's Transport Ministry. The flight disruptions hit Moscow's Sheremetyevo and St. Petersburg's main Pulkovo airports. ap...