The position of Ukraine and Zelensky is completely logical and rational. Trump fully follows Putin’s line: Ukraine must cede the Russian-speaking territories and become fully neutral.
This means no EU or NATO membership and demilitarization (a military limited to a maximum of 85,000 troops, missiles with a maximum range of 40 km, etc.).
So, if no security guarantees are attached to this, Ukraine would be completely defenseless in the future, entirely at the mercy of Russia’s goodwill. Trump wants a quick peace, he wants Ukraine’s minerals, but he refuses to provide any security guarantees to Ukraine.
During the argument in the White House, this was clearly the key issue. If you listen carefully, you’ll hear that Zelensky is demanding nothing but security guarantees—something Trump and Vance are unwilling to grant him.
If Zelensky were to accept the deal Trump is putting on the table, he would be utterly naive.
Who would willingly give up all their leverage without any guarantees? For Ukraine, this would be nothing less than total and unconditional surrender. Given the situation on the battlefield and Ukraine’s position in Europe, it seems that Zelensky and Ukraine still have other options besides complete and unconditional capitulation... so his response is not driven by a lust for war or territorial demands, but is his only option at the moment...
I really don't envy that man's position !