Russia is very unlikely to attack Trump. Trump being impeached would be something they could still use to fuel divisions in the US, but they have no reason to try and speed that up.
Tis true.
But once the sanctions bill Congress passed with veto-proof majorities goes into law, any chance Russia had of getting those lifted is officially #GurlBye, which is the thing they ultimately wanted out this presidency.
And outside of allowing Trump to continue screw with the trust of our allies, there's not much Russia can effect here on foreign policy. The Pentagon has pretty much sidelined Trump as much as they can.
Releasing the pee pee tape, if it exists (which I'm sure it does), is the last big card they have to play.