It must be really frustrating be on the receiving end of sanctions. The ugly truth about sanctions is that they punish the people more than the aristocracy. But they're still better than wars.
The point is to get people in those contries to overthrow their leadership. And if your're someone sliding into nasty leadership / government situation you have to realize there will be a consequence to that and that the perception of the ruling party can never be separated from the perception of the people.
Iranians had several mass uprisings that were suppressed by the military. And the top military and religious authorities in Iran have no problems whatsoever living well, even with all the sanctions.
Just like the Russian elites, btw. They can't visit France as easily anymore, but there's always Dubai available. That can't care less where your money comes from.