I don't really know if this fits in this community, if not just take it down. The map is from the BlackBird group.
Regarding the recent strikes on the Seim river crossings, I've been speculating what Ukraines plans are. Not too long ago, the Ukranian advance around Korenevo slowed a bit. Then they started systematically hitting the Seim river crossings, of which ISW assesses there is only one left.
If the goal was to encircle and trap Russian units, I would assume that Ukraine would make a hard push through Korenevo to the river. As it looks now, it seems like they are leaving a small corridor open. Whether that is due to Russian resistance or Ukrainian planning I have no idea.
This makes me wonder whether they are intentionally leaving a small opening (See: Sun Tzu) to try to make Russian forces low on resources funnel through the opening where they can inflict heavy casualties, or whether they are trying to force the Russians to expend resources trying to prevent being cut off before they close the net.
In any case, I can see Ukraine wanting to secure another major road towards Korenevo that they can use to supply the offensive.
Of course, I don't want anyone to reveal anything that could violate OPSEC, everything I read is based on OSINT. I'm just interested and would like to hear other peoples speculations.
First of all the entire area is mostly cut off already. The Snarkost river, which flows into the Seim is cutting the Russians off south of Korenvo. The Ukranins control those bridges.
Blowing up the bridges creates a dillema for Russia. They can fight for the land and probably have high losses or they withdraw their soldiers and give Ukraine a stronger defensive line. The Seim is a fairly large river, so a good position for Ukraine and it shortens the line they have to defend. At the same time Ukraine does not have endless resources in the region as well. So allowing the Russians to withdraw is an option.
Especially if Ukraine plans another attack it would be a good choice. Ukraine has something like 100Leopard1, which have hardly seen combat and thousands of new recruits, which have recieved training. We have so far not seen those units. Many front line units in Donetzk are also complainign that the general staff is withdrawing assets. Kursk is a few thousand men, so not something they would notice. We also know that Ukraine has been attacking Crimea for some time. So maybe we see another offensive in the south soon. But all of that is just speculation.