The US and international community has accused Russia of war crimes in Ukraine as Russian artillery has devastated Ukrainian cities and lives. But it has been difficult to associate specific generals to specific crimes, the key to actually carrying out war crimes prosecutions. In Kharkiv, CNN has seen the aftermath of attacks targeting civilians using indiscriminate cluster munitions -- a war crime. In a two-month-long investigation, CNN can reveal the commander responsible for these attacks. CNN's Nima Elbagir reports. #CNN #News