Trump was wrong on a lot of points, but also right on more than a few.
He was for instance right when he said the Iran deal was a bad deal, in that it gave Iran the means to pursue regional violent interference and the ability to develop ICBMs (a precursor to having a nuclear arsenal, even if you develop them under the obvious cover of a civilian space program).
I hope Iran comes to it's senses and realizes a new more broad deal is in order here.
If not, then i hope the west is able to sanction the Iranian leaderships in ways that actually hurt them, in order to bring them to the negotiating table.