Earlier quoted context omitted.
Zelensky predictably plays the tough guy by telling him to pound sand. Zelensky flew to Washington to sign the agreement, and fully expected to--they waited an hour after the blown up press conference before being told to get out. Diplomatically, Zelensky wasn't even badly behaved in the press conference. Vance and Trump kept escalating the discussion. If there was a play, it was one constructed by Trump to give hims…
Watch _the whole_ press conference, the entire 53 minutes, not the carefully selected morsels that CNN prepared for you in order to mislead. Zelensky failed to read the room, and 23 minutes or so into the conversation he started to self-immolate, something Trump and Vance gladly helped him with.
No one in that room recognized more than Zelensky that worthlessness of American promises of security. What value then to humiliate oneself? Ukraine gave up its nuclear arsenal on American promises of security, and look where that got them.
On the contrary, the display in the press conference did do some good for Ukraine. There was an emergency summit in London that weekend where the heads of Europe agreed to step up their support for Ukraine, increase defence spending, and to work towards total independence from the US in 10 years. NATO is now a vestigial treaty that's a foreign policy option rather than a commitment. Who's responsible now for pushing us closer to WW3?