One of the things I advised Donald Trump to do was to make sure that, before he commits to certain courses of action, he has really dug in and thought through how various issues play themselves out.
Essentially, Iran was sanctioned because of what had happened at Fordow, its unwillingness to comply with previous U.N. security resolutions about their nuclear program, and as part of the package of sanctions that was slapped on them, the issue of arms and ballistic missiles were included.
Back in the '50s and '60s, most politicians were concerned about not talking about faith, partly because there were consequences you had to deal with - (for instance) Catholicism had been made an issue.