HTownAg98 said:
There's been a lot of talk as to why the Russians have been able to make better progress in the south because it's drier and they aren't just restricted to the roads. How far north does this "dry line" extend? Does it run all the way to the south side of Kyiv, or does it stop somewhere, and Russian troops will be committed to the roads, just like they are in the north? Seems like you'd want to use that natural chokepoint to make a stand in the south.
It's not just "dry terrain"
look at the map of Ukraine and what the territory is north of Kyiv
the Russian force was heading due south from staging grounds in Belarus, through a massive Pripyet Marsh that bedeviled the Nazis in WWII. and then there is the Dneiper river on one side, and on the other side the Ukes flooded some plains from the Dnipro river.
so the Russians are boxed into one major north/south artery with that 40 mile convoy unable to deploy
in the south, there is a larger road network and more open terrain and not as many Uke defenders. It's similar to how the US Army was pinned down for 6 weeks after DDay in bocage country, but was eventually able to breakout from Normandy across all of France.