He had better not be rewarded for his aggression. I don't think the American people would stand for it.
This is the result of a stolen election. "10% for the big guy" sat on his hands while Putin took a month to completely encircle Ukraine, and then he invaded. You just saw a Real Leader in action. He threw that Tin Pot Dictator right outta the White House.
Zelensky has a lot of valid grievances. His problem is that he is not in a position to solve them. He either has to cut a deal that doesn't right every wrong or he has to fight on without the US bankrolling the war. He made a mistake coming to sign a deal and then complaining about it in front of the press. Reject the deal if you don't like it and stay home. If you are in the Oval Office to sign the deal, then play nice and do it. He lost his cool and the whole thing blew up. My guess is that he still signs before leaving but the consequences are his own.
What SHOULD happen and what is possible are not the same thing. Putin would fight this war indefinitely. Perhaps for decades. That means thousands more dead, billions more spent, cities destroyed, and eventually a similar deal would end it. Not every wrong can be righted. The best deal for everyone is that the war and killing end now, the US gets some of the billions spent back in terms of the deal, Ukraine has increased security via the deal, and non-US peacekeepers and everyone moves on. If this war has proven anything, it is that Russia is largely a paper tiger. The cold war propaganda that they are a threat was overblown. They are not invading any NATO country if they could barely overrun a few small regions of Ukraine over a three year war that may have cost them a million casualties.
How would Ukraine have increased security?
A massive US economic interest in the mineral rights and non-US peace keeping force.