ImO I can understand the Ukrainian Presidents stance. If you sign now your going down in history as the President who gave away land to an invading country and also blood and soil......
Those aren't ideal precondition, it also leaves Europe vulnerable with no real protection and it's not just Zelensky who doesn't want him to sign it I imagine it's probably European Leaders from England to Germany and France as well and a large group of Center Neo Con Republicans too....... in real politics it also leaves America vulnerable in the future as well.
IMO this whole mess up started with Obama after he refused to really do anything after the Syrians and Russians used Weapons of Mass Casualties or Chemical Weapons..... after Crimea.....
The Russians simply always look for open doors...... and they will always look for an open door unless there is steel on the other side of it..... they will keep looking to open doors as they have in Ukraine and other parts of the world.....
It's good IMO in the grand scheme of things the deal wasn't signed, the war will continue and more will die but the alternative IMo wasn't acceptable for Ukraine, Europe or even the US.
Plus now the Europeans will actually have to do something meaningful and start taking more measures to spend in military and defend themselves vs over-reliance on the US. Maybe peace will come after another 4 years of war but I don't see it coming anytime soon after this.