Appears that Ukrainian forces have been going after that huge convoy outside Kyiv:
Ukraine jets hit Russian column; Russia has used thermobarics, Ukraine military says (militarytimes.com)
“We are striking the enemy’s columns,” Brig. Gen. Kyrylo Budanov told Military Times in an exclusive interview Wednesday morning. “We burn many columns of the enemy.”
The strikes, he said, are being conducted by Ukraine Su-24 and Su-25 fighter jets, artillery and missile barrages.
“We’ve seen indications that at times and at certain places, the convoys may have been resisted by Ukrainian forces and I think I have to leave it at that,” the official said. “But we’ve seen indications that we are in no position to refute [Ukraine claims they have hit the convoy].”