“At this point their initial war aims have been soundly defeated.”
If this is so, Ukraine can demand peace negotiations from a position of strength.
Ukraine’s condition for peace is the complete withdrawal of the Ruzzians from Ukrainian territory.
“If this is so, Ukraine can demand peace negotiations from a position of strength.”
Generally it is the losing side that demands peace negotiations, or the side that lacks confidence in its ability to effectively prosecute its fight. Conversely, a winning side generally demands unconditional surrender.
I don’t think either side is currently in any position to realistically demand either (though one or both might have rumblings about one or the other).
But — and I’ve said this from the beginning of March, 2022 — Ukraine wins by not losing.