6, bringing regular Ukrainian forces into Russia for the first time.Kyiv has so far maintained a policy of silence on the incursion, despite the ongoing fighting and Ukraine advancing deeper into Russian territory. Previously, videos of Ukrainian soldiers on Russian soil, including those from the town of Sudzha in Kursk Oblast and Belgorod Oblast, were shared on Telegram channels. The video published by the 225th battalion is the first footage from the Russian region published by the Ukrainian military officially. "Darino. Fighters from the 225th Separate Assault Battalion are removing a rag from the administrative building after clearing it," the caption reads.The Kyiv Independent could not verify the location. Darino is located some 4 kilometers (2 miles) from the border with Ukraine.