IMO, United Nationa always been useless organization. Goal of it is nice, but in reality they have zero power to influence things. Only thing that they can do is tell that they're deeply concerned and condemn something.
And Russia, as a permanent member of the UN Security Council, has veto power. The veto power restricts strict resolutions against them.
This veto right is such nonsense which makes UN is mover powerless. Offcourse that these who have veto right will block any resolution that will go against them.