President Zelensky accused Russian forces of using North Korean soldiers for assaults on Ukrainian positions and attempting to burn their faces after death to conceal evidence of their involvement.

From: Kyiv Post — Ukrainian President Volodymyr Zelensky claimed that Russian forces are attempting to burn the faces of deceased North Korean soldiers to conceal their losses.
According to Zelensky, Russia not only uses North Korean troops for assaults on Ukrainian positions but also tries to hide their casualties.
“While they were being trained, they were forbidden even to show their faces. Any video evidence of their presence was erased by Russian forces. And now, after battles with our troops, the Russians are even trying to… literally burn the faces of the killed North Korean soldiers,” Zelensky wrote on his Telegram channel.