We don't yet know who did that and that happened only after Amerisarel's unprovoked invasion and war of aggression on Iran while in the middle of duping them about taking part in peaceful negotiations. Its a perfectly fine military action in the middle of a war. It didn't happen before Amerisrael assaulted Iran.
I'd worry more about the belligerent psychotic middle eastern country that has estimated 200 nukes but still refuses to acknowledge their existence or allow any inspections. A country with nukes that lies about them and jailed the person who exposed the nuclear program is an existential threat to the entire earth. Iran is nothing in comparison.
edit: I see there was an older event after reading 'seanmcdirmid' s comment, however not knowing anything of it, I won't comment on that.
I'd worry more about the belligerent psychotic middle eastern country that has estimated 200 nukes but still refuses to acknowledge their existence or allow any inspections. A country with nukes that lies about them and jailed the person who exposed the nuclear program is an existential threat to the entire earth. Iran is nothing in comparison.
edit: I see there was an older event after reading 'seanmcdirmid' s comment, however not knowing anything of it, I won't comment on that.