IMO, Zelenskyy is a rogue dictator whose actions cannot be predicted nor depended upon.
If I were the President, I’d make it known that the US will neither support continued fighting nor deal with peace negotiations until there have been free elections in Ukraine.
Withdraw from NATO and Europa.
Make it known we will never come to their aid ever again.
Our attention is here, in our own hemisphere as well as the Pacific rim. And far east Siberia is part of that region.
Make a trade deal with Russia for raw materials from there.