With all due respect, I don't see that as both sides. This reads as the US is back peddling.
As they should when they push a stupid narrative and the entire world tells them to slow their roll.
Iran's argument is - you unilaterally cancelled a good faith deal we had in place with the entire world to try to look tough. We have nothing to discuss.
Its like in the civilization games when a leader denounces you and refuses to talk to you. It usually leads to war lol ugh