Ukraine could launch its offensive against Russia any moment. Here’s what’s waiting - NewsBreak

From the article...
Franz-Stefan Gady, a London-based specialist in modern warfare, says the Ukrainian goal must be to “set off paralysis in the Russian military leadership and panic across the Russian rank and file … Intangible factors such as tactical surprise, battlefield leadership, and fighting morale will likely be decisive in the first 24 hours of an attack.”
We have already seen that the Ukrainian Fighting Morale well surpasses the Russian troops previously deployed there, and in that they will still have the upper hand.

From everything I've seen about the only thing Russians have going for them is numbers. Western technology can counter that and from all reports Russian morale is in the pits. Take out their leadership, command and control, and their troops will flee the vaunted defensive positions they've been forced to create. Ukrainians issue will continue to be establishing some type of air superiority to ward off attacks launched from well inside Russia.