Ukrainian Prosecutor General's Office Yuriy Lutsenko has promised legal evaluation of the mistakes made by the General Staff command during the anti-terrorist operation in Donbas in 2014-2015.

"The fourth factor [revealed] by the examination is the mistakes made by the ATO command and the Ukrainian General Staff during planning and execution of military operations. This is another fact established by the examination, and every episode of these mistakes will be legally evaluated from the angle of supervision of the military operation by the General Staff, the Defense Ministry and their subordinates," the prosecutor general said at a meeting of the Verkhovna Rada National Security and Defense Committee on Friday.

"The fifth factor, which, according to experts is the only factor having a causal relation to the Ilovaisk tragedy, is the military aggression of the Russian Armed Forces, the direct military invasion of the Ukrainian territory," he said.