"I would like to repeat this again to all Russian pilots, they are not thinking about the orders they are fulfilling. Because killing civilians is a crime. And you will be responsible for this whether it is today or tomorrow, this is inevitable," he said during an address posted to the Ukrainian government’s Facebook page. 
"Especially we are talking about a bomber plane over Mariupol, and that will happen to everyone who is killing our civilians, in our peaceful land," he said.