I do not know about Israel, but I can read both Russian and Ukrainian. And there is a pretty objective test: read a Russian president’s statement - see how it is reported, read a Ukrainian president’s statement - see how it is reported.
Note: I can’t verify facts in the field, but I can read the statement and see how it is reported. So, samples:
1. After pro-Russian forces achieved a major victory in August 2014, the Russian president issued a rather consolation-seeking statement, between other thing “asking” pro-Russian forces to release prisoners.
This was reported as a belligerent statement.
2. At approximately the same time the Ukrainian president issued a statement basically justifying war crimes as means to win the war, on the lines: “our children will go to schools, and separatists’ children will be hiding in basements - that’s how we will win this war”.
This was not reported at all.
Again, these things are easy to check - just read / listen to the original. Still, the media are lying about them. What do you think they are doing reporting things that are not that easy to check?