As Russia floods the front with faster Geran drones and more Iskander missiles, Ukrainian commanders warn that this winter’s air war could overwhelm already stretched air defences and critical infrastructure.

Russia is upgrading its Geran drones with jet engines and Seeker guidance systems, using them to strike ships and ports and disrupt Ukraine’s vital Black Sea trade.

Defence Intelligence of Ukraine has reported that Russia's military-industrial complex plans to produce 11,000 attack drones in August, including Geran and Gerbera types, with a…