In territory which are under control of the Ukrainian military battalions, there are mass executions. After everything seen I can draw an unambiguous conclusion that in territories which occupy formations of the Kiev power, there are mass executions of captured rebels, that is war proceeds, and also there are extrajudicial punishments over the civilian population. Proceeding from the international legislation, it can be treated as war crime, as genocide against own people. Such occurred in Rwanda, in Yugoslavia, and guilty of it have to be found and punished. They have to appear before the international tribunal.
I want to note especially that war crimes have no limitation period. Proceeding from the previous experiment on Yugoslavia, it is possible to say that investigation will be objective not fully.
We will be realists: today in the UN the main role is played by the USA. But at very principled stand of Russia, at the corresponding diplomatic efforts, it will be possible to achieve that there will be real trials over guilty of this tragedy where and accused and defenders will have full authority.