not happening. trump is never going to risk an embarrassment like the afghanistan withdrawal happening on his watch. he might convince zelenski to offer leaving crimea as "independnt" (occupied by russia) and creating a demilitarized zone but a freeze at the current lines would essentially be the same as a loss. russia will be sent to the pre-2020 lines with maybe a pause on nato membership for ukraine but but not without an expiration date.
United States