Russia entered the 2026 spring and summer campaign hoping to accelerate its advance across eastern Ukraine. Instead, its offensive has slowed dramatically, with gains far smaller than in previous years. One reason is Ukraine's rapidly evolving drone warfare. The Kyiv Independent's Francis Farrell and Olena Zashko embedded with the Signum Battalion of Ukraine's 59th Assault Brigade, one of the country's pioneering FPV drone units operating in northern Donetsk Oblast. Fighting from concealed