Wondering how far they'll push this, it seems like they've breached the first lines of defence. If they're past any major mine fields and can start manuvering for real russia is going to have a hard time answering. Can only hope that we soon start seeing russian forces stuck between the border and these forces pushing in behind them.
This is unlikely to be territory they hold for long as Ukraine's military objectives do not include, nor are they helped by permanently occupying Russian territory.
This is a raiding force and while I'm sure they have specific objectives located within this territory e.g. critical infrastructure, just the act of this incursion creates a wide range of implications and problems for Russia.
I imagine we will see more of these types of cross border raids, at least until Russia is forced to redeploy its military assets to secure its borders that it previously did not have to defend. Which I suspect is the overarching objective of this strategy by Ukraine.
I could see a benefit to occupying a small amount of Russian territory, not a whole lot as to not risk compromising foreign support, but something, simply because the war is very unlikely to end with a total defeat of the Russian state, so a Ukrainian victory would mean Russia deciding that it was no longer worth it and leaving, or Russia getting pushed out of occupied lands and then the conflict settling into a frozen conflict. The former is probably more likely than the latter given attacking entrenched positions is difficult, so having some bargaining chip if Russia decides to end things makes it more likely that they pull out entirely rather than try to just stop with what they occupy, since freezing the borders as they are in such a case would mean giving up their own territory.
Keep in mind they post it with a required lag not to comptomise their troops. It means they were probably driving like this yesterday, and what are they doing today is yet to be seen. Keep your popcorn hot guys and gals.