fire at an oil depot just across the border from kharkiv, ukraine, the result of an air strike by two ukrainian helicopters that flew in at a low altitude. cnn unable to verify the claim. that's according to the governor and his telegram channel. he said two employees were injured, but not in danger. the fire engulfed fuel reservoirs. firefighters are on the scene. there is no threat to local population at this stage. more on that when we get it. russia's war in ukraine appears to be shifting to the east, to the donbas region. when we come back, the capital and other key cities are seeing a surge in shellings. those details in a moment. also, we're hear from southern ukrainian soldiers who delivered the fatal blows in the south.