Maybe if the US asked nicely or Israel could ask since he is their friend.
I agree that Israel should call Russia out and it shows weakness that they are not.
You also have to see it from their lens, these are the same countries that have been semi sanctioning them and calling their defensive actions as war crimes. It’s very hard for a country like Israel to give any power to the world court or the concept of war crimes when it will only come back to bit them later.