Massed Russian aerial attacks using long-range drones have been a near-daily occurrence over Ukraine in the past several months, as Moscow looks to exhaust Kyiv's air defences alm

Snow, sleet, fog, the lot; when the weather is at its worst is when Russian soldiers tend to go out on assault. After a day and night of steady snowfall, the sky begins to clear just before dawn, during the silent drive to Ukrainian drone positions south of Kupiansk in Kharkiv Oblast.