The death toll in the town of Bucha outside the Ukrainian capital city of Kyiv is already higher than that in the Vukovar massacre in Croatia, Ukrainian Defense Minister Oleksii Reznikov wrote on Facebook on April 4.
"In Bucha alone the death toll is already higher than in (the Croatian city of) Vukovar," he said.
"Shots in the back of the heads of men and women with their hands tied are utterly inhuman. These killings are not perceived as part of the war. It is even hard to qualify them as terrorism or crime. They are the essence, the nature of these mad butchers that invaded our land. This is what (Nazi Germany's) SS troops used to do in the past."
At the same time, Reznikov expressed confidence that the Russian invaders would eventually be held accountable for their war crimes.
"This evil simply cannot go unpunished," the minister said.
"Our intelligence is consistently identifying all invaders and killers. All of them! And each killer will at his own time get what he 'deserves.'"
Up to 264 Croatian prisoners of war and civilians were killed in Vukovar by Serbian volunteers and Yugoslavia's units on Nov. 20, 1991.