The roads to Crimea are beginning to tell the story of Russia’s defensive dilemma. Burned trucks, stranded convoys and air defense systems hit while being transported suggest that Ukraine’s drone war is reaching deeper into the logistical arteries that sustain Russia’s occupation. Ukrainian drones also recently gatecrashed Vladimir Putin’s St. Petersburg economic forum. Mobile internet was shut down and the airport temporarily closed. It was not the sort of investment climate brochure the Kremlin had in mind, after the drone threat forced Moscow to hold a toned-down parade in May.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. “Leningrad and Moscow regions are highly populated and economically vital for Russia’s war machine,” said Cristian Terheș, a member of the European Parliament. “Ukraine is successfully executing classic economic and psychological warfare against them.” The embarrassment extended to the Baltic Fleet: Kyiv’s drones targeted the Kronstadt naval base near St. Petersburg and struck the corvette Boikiy in dry dock, showing that even Russia’s northern naval sanctuaries are becoming vulnerable. Russia’s air defense headaches stretch across the country. The Kremlin has reportedly created a new Ka-29 helicopter regiment to shield the Northern Fleet from Ukrainian drones near the Kola Peninsula, roughly 2,500 kilometers (1,553 miles) from Ukraine.