Here's a single sentence taken from the article linked below which pretty much sums up reality:
......"a military that needs North Korean shells and St Petersburg convicts is at best down to the bare minimum strength needed to protect Russia itself".
https://edition.cnn.com/2022/09/13/e...ntl/index.html
Regardless if Putin is concerned with this or not, his decisions going forward could put Russia in an even worse situation. Up until now all the fighting, bloodshed, and mass destruction, has been across the border in Ukraine - but I wonder what would happen if Ukraine launched a major offensive against Russia? More nuclear saber rattling? Or, in reality, does Russia's nuclear might mirror that of it's unmaintained and obviously weak Military? If so, they should probably start thinking about piling up some sandbags along their border.