The thing about the Russias second fronts mentioned earlier, my thoughts are when Russia launched the initial attacks last year they had to build up a force of tanks, transport fuel trucks and APC’s at various points across the borders ready to strike, but kept bluffing saying there was no invasion Plans and it was simply exercises.
This time they will not be able to bluff and to open several fronts Russia will need to build forces up near the borders and that’s where they will be vulnerable to accurate fire., the west needs to provide long range HIMARS to destroy those assembly points before they have a chance to move off, or destroy the transport infrastructure to prevent that build up or drop bridges etc preventing its movement towards Ukraine.