[Dr. Franklin]

The "stationary" part is what infantry tries to avoid, unless they have run onto serious opposition and the offensive has stalled.
Modern maneuver warfare - which is what Russia's force is supposed to be tailored for - should be able to maneuver around opposition and attack from the flanks.
That they aren't, shows that they have hit something that is stopping them and they can't get around it.

Maneuver warfare requires the ability to move. It appears that the Ruskies had their supply lines cut, and they are stuck in places. They also appear to lack air supremacy. Things would then be reduced to more basic tactics favoring the Ukrainian, like WWI with trench warfare and more disciplined advances to avoid creating vulnerable salients.

[redgolum]

Why are you assuming they are using maneuver doctrine?

Very few know what they grand plan is. SO far Russia has taken quite a bit of the east and south. Kiev stands so far, but if you look at the map they are only open to the south down river. Like Russia is trying to get the civies and non combatants out.

This is far from shock and awe, but if you go back a few hundred years this is a pretty good plan for besieging a city back in the days of the ideals of Just War.

If that is the case, the same rules say that after a period of time, anyone who remains in the city is considered dead and will be treated accordingly.