Please note that Kherson is located outside of the Crimea. It supplies water to the Crimea. The Russians recently captured it. The Ukrainians want to now re-capture it.
A belligerent (Ukraine) is under no obligation - moral, legal, or otherwise - to supply its adversary (Russia) with needed resources (excepting in humanitarian cases).
Regards,
“The Russians recently captured it. The Ukrainians want to now re-capture it.”
As they say, “In hell, they want ice water.”
The recent incursion by the UAF into Kherson Oblast was totally destroyed. That is reality.