How about comparing past records:
On the one side you've got the US, which has initiated and/or been involved in countless wars a long way outside its own boundaries, and is the only country to have actually used nuclear weapons in anger.
On the other side you have Iran, which has, within living memory, not been involved in any wars except when defending itself against the US-backed Iraqi attack in the 1980's. And which is constantly being threatened with attack by US-backed Israel.
Who are the bad guys again?
Ah, but that was in the name of freedom, you see! They're spreading 'democracy', one bullet at a time.
It's nothing about oil or empire building... oh no...
Please report to the propaganda station for a full briefing!