I mean look, Trump wants his vanity W, even if it’s short-lived. If he doesn’t get it for the social day he is very liable to get bomb-y.
If they don’t know this they do not yet know him, and may (not) live to regret it
BREAKING: Iran directly rejects Trump's new claim of a deal being signed tomorrow, saying the insistence on signing the deal on specifically Sunday is engineered around his own birthday, calling it a "propaganda event" that Trump is trying to turn into a unilateral "symbolic occasion" for himself, along with his UFC White House event, per Fars.
The Iranian negotiating team says it "will not permit such a media and ceremonial manoeuvre," explicitly stating that the memorandum of understanding has not been finalized and no signing will happen.