Ukraine’s president says Russia is planning a protracted campaign of drone attacks in a bid to demoralise Ukraine…Volodymyr Zelensky said he had received intelligence reports suggesting that Moscow would launch the attacks using Iranian-made Shahed drones…It comes after Ukraine carried out a strike that it said killed hundreds of Russian soldiers in the Donbas region…In an extremely rare admission of battlefield losses, Russia said the attack killed 63 of its troops…Speaking from Kyiv in his nightly address, Mr Zelensky said Russia planned to “exhaust” Ukraine with a prolonged wave of drone attacks.