Analysts from the crowd-sourced monitoring website DeepState Map reported on Dec. 10 that Russian forces had advanced in Sumy Oblast near the border village of Oleksandriya.

DeepState is a mapping project, independent but with close ties to the Defense Ministry, widely trusted as one of the most reliable sources of accurate information on territorial changes along the front line.

The map changes showed Russian forces occupying 2 square kilometers (0,8 square miles) in Sumy and advancing in the Kursk Oblast. These developments are reflected as of December 10.

Sumy Oblast authorities, including head of the Military Administration Volodymyr Artyukh, rejected the notion that Russian forces had breached the border, calling the reports "fake" and describing them as disinformation.

"Now, there is no data from the military on the change of the situation on the border; the situation is controlled," Artyukh said.

Sumy Oblast borders Russia's Bryansk, Kursk, and Belgorod oblasts. Residents of the vulnerable border communities experience multiple attacks per day.

Ukraine peace talks could start this winter, Tusk saysSpeaking during a government meeting, the Polish Prime Minister announced that Poland, set to assume the rotating presidency of the Council of the European Union on Jan. 1, intends to play an active role in the talks.The Kyiv IndependentTim Zadorozhnyy