The same data networks that enable phone apps and web surfing help drones navigate, so officials are imposing daily, patchwork shutdowns. The actions can be very disruptive to daily life.

For the first time in nearly a decade, Russia canceled its annual Navy Day celebrations in St. Petersburg and other cities, which were scheduled for Sunday, July 27. With nearly 100 Ukrainian drones shot down by the Russian military between Saturday,

St. Petersburg's airport closed for five hours and the city canceled its naval parade because of security concerns.