While I agree with you in context, your discussion reminds me a lot of John Adams and Benjamin Franklin and how they approached the French.
John Adams came in like Zelensky while Benjamin Franklin was very much working the system. In the HBO series, he had to pull John Adams aside to restrain him.
There is a saying, when in Rome, act like the Romans. I think Trump is being bullheaded and wants peace no matter what the context, but Zelensky also needs to be able to read the room like Franklin did.