Ukrainian drones, in the past week alone, have bombed military and energy facilities in five Russian cities, hitting targets in a 1,000-mile-long north-south arc that stretched from an oil refinery near St. Petersburg, on the Baltic Sea, to a refinery near Sochi, on the Black Sea. Local Russian governors have posted spectacular photos: orange flames and thick black smoke pour from oil tanks; water from fire hoses encases a stubborn gas blaze in an ice palace.