Fedorov's office sports a huge video screen with dozens of live feeds from Ukrainian drones flying over the front lines. Together, the feeds provide a vivid glimpse into Ukraine's drone war, in which commanders claim flying robots now account for an estimated 70% of all Russian deaths and injuries.

Russian air defenses destroyed 73 Ukrainian drones overnight, including three heading for Moscow, Russia's defence ministry said on Friday.

Ukraine war has become the most drone-intensive conflict yet – and Ukrainian commanders believe they are the only thing keeping Russian forces at bay, writes