And yet none of those explications were cited by Trump. They would seem like obvious rhetorical wins for populist support of the fight against terrorism. A more honest explanation would have to ask what the US government stands to gain from renewed sanctions of Iran.

https://en.wikipedia.org/wiki/United_States_withdrawal_from_...

Nope. There have been multiple reports that validate the claim that the deal was terminated by a combination of Trump's personal distate for a deal negotiated by his predecessor and a proliferation of Iran hawks in the Trump Administration.

Where do people get these talking points from?

Intelligence chiefs have testified in front of congress that Iran was following through with it's end of the deal. The US then unilaterally decided to tear up the treaty and put in economic sanctions based on nothing. It's almost as if they want Iran to build nuclear weapons. It's also putting pressure on Europe to pull out of banking and business ties that were built after the embargoes were ended.

https://www.nytimes.com/2019/01/29/us/politics/kim-jong-trum...

It's the best deal they could negotiate. It was done by moderates on the Iranian side who have now been discredited and the hardliners are ascendant.

If you think military provocations and escalations are a sign that sanctions are "working" you're in for a surprise. All it takes is one side to make a little mistake and it escalates quickly and unintentionally.

Trump has emboldened the Iranian military by pulling his punches. Now they assume they can take action without a military response from the US because Trump is not willing to go to war. That logic unfortunately makes war more likely.