Iran is a dangerous country in terms of its propaganda and its potential to inflict damage to local and regional economies through terrorism. Every single generation that grows up in Iran is taught to hate America. Unfortunately, Western foreign policies over recent decades have been the vehicle through which Iran has been able to grow its influence into Palestine, Iraq, Yemen and others. Taking out Saddam was the stupidest thing we ever did. The last remaining checks in the region are Saudi and Israel and these two just don't have the military might or resources to contain this Iran situation. Good on the American's for taking action against terrorists. That being said this is likely a one-off measure. The long-term plan can only be sanctions and trying to destabilise the regime.