Can Sanctions Be Used to Limit Iran's Influence in the Immediate Region?

sanctions target in economy that, when it's going at full throttle, could be approaching a trillion dollars. Backing asard's regime in syria is thought to have cost teran about 20 to 30 billion dollars over the last decade. Even if the aranians are under massive pressure, they're going to be able to budget for the coots force and their special forces units. It's like hunting a mosquito with a shotgun rate.