Under a scheme first trialled last year and dubbed "Army of Drones: Bonus" (also known as "e-points"), units can earn points for each Russian soldier killed or piece of equipment destroyed. And like a killstreak in Call of Duty, or a 1970s TV game show, points mean prizes.

Russia and Ukraine again exchanged a series of major overnight drone strikes as the two sides maneuvered ahead of a possible resumption of ceasefire talks later this week. Renewed talks -- if they do happen -- would take place as both Kyiv and Moscow near new records for the scale and intensity of cross-border strikes,