No, they tried to negotiate a new deal, not go back to the one they had agreed to. Why would Iran trust any new negotiations?

Iran was naive enough to trust the US twice in the last year and HAD THEIR NEGOTIATING TEAM BOMBED! I'm shocked they even trust the US to hold up to the deal they signed today. I'm guessing US concessions on frozen assets was just too much to pass up.

Why would Iran take that at that point? There's no trust.