If we could invade a Europe completely dominated by the very powerful Nazi regime by sea and land men on the Moon, we can do anything we really want bad enough.
If invasion were the only way to stop Iran, then yes we could and would do it because eventually there would be no more debate. I say ‘eventually’ because when ‘evil’ raises it head for all to see, then the debate is over. So far it’s terror which is horrible, but as soon as a nuke goes off, it becomes ‘evil’ and that’s when all options are on the table.
But I believe invasion is not necessary for Iran. Maybe for ISIS but not for Iran. Iran can be defeated from within.
Hope you read through my long post above. Would like to see your feedback on that.