lpm wrote: Tue Mar 29, 2022 12:40 pm
The retreat from Kyiv is long over due.
Presumably Ukraine will try to pick off pieces as they leave.
Any glance at the map shows Russia needs to convert this into an east of the Dnieper thing. The east-west line from that bend in the Dnieper all across to the seized territories, with Mariupol razed, giving the Sea of Azov corridor. Plus a north-south line somewhere - they're not going to get Kharkiv or Sumy, so abandon that idea too and concentrate on getting all of the Luhansk province?
There's an old, but still relevant concept in military matters - that of Interior Lines and Exterior Lines.
The quickest way to explain it is to imagine terrace of houses, and the distance it takes to travel from the front door to the back door. The owner of the house can walk through the house from the front door to the back door, because the owner of the house has
interior lines, and thus the journey is a short one. A stranger without keys to the house has to walk down the street, along the connecting alley and back up the other street, because the stranger has
exterior lines. The journey is thus a much longer one.
The Russians northwest of Kyiv have to withdraw north to Belarus, then around Ukraine, and re-enter at some point in the east. The Ukranians northwest of Kyiv can get on the road and head there directly. In short, a Russian redeployment will take longer than a Ukrainian one, meaning the Russians cannot this way outmanoeuvre the Ukrainian response.
A good historical example of this is the Battle of Gettysburg, where the Union forces could rapidly redeploy along their intererior lines to counter any rebel offensive, but the rebels could not so easily move their forces from one part of the front to another.
As for the Russian claim that it is a conciliatory gesture to slow/halt their attacks on Kyiv, this is of course b.llsh.t. The Ukrainians should hound them all the way to the border if it looks like they will gain an advantage by doing so - eg a morale boosting propaganda win, an encirclement of Russian troops, or just disproportionate attrition on the Russian side.