Nukes is irrelevant. If someone dies it doesn't matter at all if it was a nuke or a conventional weapon. Nukes can do a lot more damage in one go, but if you are killed by something else you are just as dead. Iran was clearly working on killing people by non-nuclear means as well.
I don't approve of war (and Trump didn't handle it well). However I also don't approve of what Iran has been doing.