“Russian President Vladimir Putin has repeatedly demanded that any future peace talks be based on a return to the Istanbul parameters, which in Moscow’s interpretation foresee a sharp cut in Ukraine’s military, a ban on foreign weapons and troops, and a Russian veto on Western security assistance in case of renewed conflict. Ukraine refuses to return to that draft, which was never completed or approved by President Volodymyr Zelensky.”
It wasn’t agreed to NOT due to European pressure, but just because it was a lousy deal. It would be a worse deal now, and Trump will not get Ukraine agreement to it.
It’s a framework, but the specifics will be negotiated based on current circumstances instead of 2022 situation.