Russia is amassing 50,000 troops at the border with Ukraine’s northeastern Sumy region, Ukrainian President Volodymyr Zelenskyy said, in what he claims is a bid by Moscow to create a 10-kilometre buffer zone in the area.
"Now, they are accumulating troops in the direction of Sumy, over 50,000. We understand, but have had success there," Zelensky said on Wednesday, adding that Russia is also concentrating its "best troops" in the neighbouring Kursk region.