Sanctions against Iran play an important and justified geopolitical role. Iran has been a complete menace to the Middle East by propping their proxies and de-facto taking over at least 5 different countries and serving as one of the supporting pillars for Russia in its war. We have not seen the last of this war, too early to call the results. Trump is not backing down and we may see a Venezuela like situation at the end which would have massive geopolitical implications (of course there are other much less favorable outcomes too).
I think your phone autocorrected Israel to say Iran. Also you provided no evidence for your claim, you just kept repeating the claim over and over instead of backing it up.
Iran is the source for the Islamic justification for suicide bombing (suicide is forbidden in the Quran and thus 'innovation' was needed to justify it). That alone puts immense amounts of blood on their hands. They invented this justification for their own religious and geopolitical aims (getting the US out of the ME). They are interventionists who want to be the spiritual centre of Islam, they are the opposite of passive actors in their region.
The bigger question is whether the other Gulf states (that we ally with or support) are any better and whether or not they deserve sanctions too. The West is clearly not in a place within the ME to preach morals, but that doesn't mean countries like Iran don't deserve sanctions.