Iran is the threat to stabilization in the region, and in Central Asia. Wake the fuck up.
This is what I was responding to, by pointing out that the USofA has done a huge amount of destabilizing the ME in the past two decades. You could also add in Libya, though I was in favor of removing Qaddafi when possible, as he was responsible for destabilizing a half dozen African countries. But their should have been a post-Qaddafi plan. If you want to delve into history, we can talk about the time the CIA led a coup and helped assassinate the democratically elected leader of Iran.
Interestingly, Iran has increasingly become a status quo power in the ME and Central Asia. Iran supports and partially controls the democratically elected gov't in Iraq. Iran supports the recognized gov't of Syria, and is actually legally involved in the civil war there, as they were invited in by the Syrian Gov't. Iran was important in rolling back ISIS and removing it from Iraq & Syria. Iran has taken in a fair amount of Afghan refugees, mainly Shiites under attack from the Taliban.
Now you might not like their allies and the status quo they support. But they have become a stakeholder intent on bolstering and stabilizing the gov't of Iraq and Syria. Iranian interests and presence in these countries permits certain deals and accommodations to be reached. Though the US currently has no interest in doing so.
I'd also add that Saudi Arabia has been hugely disruptive in the ME. With its horrendous war on poverty-stricken Yemen. Kidnapping and forcing the PM of Lebanon to resign. Putting the now recently ex-dictator of Sudan and the head of Lebanon and likely other leaders on their payroll. Killing and dismembering a regime critic in Turkey. Bullying and embargoing Qatar. And that's just the last few years. Not even going back to financing and spreading fundamentalist Islam (Wahhabism) throughout Central Asia and other places.