> I'd have been sympathetic to that argument up until a few hours ago
These are somewhat independent variables. America was open about the fact that we were trying diplomacy before force. Either, one or no sides could have been negotiating in good faith and still wound up here with that setup.
No they weren’t. Trump cancelled the previous treaty and then wanted a new agreement more favorable to the US than JCPOA.
I don’t like the mullah’s in Iran anymore than the next person but no reasonable and sane person would take that to mean “negotiating in good faith.”