Kharkiv and the surrounding areas are under attack. Satellite images show an eight-mile long convoy just outside the Ukrainian city consisting of armored vehicles and trucks with towed artillery and support equipment. And at the helm of this new offensive is a brutal new general, Aleksandr Dvornikov, who became known as the "butcher of Syria" and is notorious for inflicting atrocities on civilians. Meanwhile, in Moscow, Austrian Chancellor Karl Nehammer has been meeting with Vladimir Putin following weekend talks with Volodymyr Zelensky. Nehammer is calling for a full investigation of Russian "war crimes." CNN's Nic Robertson begins today's coverage.