The cost of not having this war could have been 8 trillion and countless lives, or some arbitrarily huge number. Many of the actions taken this year are directly intended to curb the possible events that could lead to World War 3. Iran is directly connected to all of that.
Seems like money well spent.
> the possible events that could lead to World War 3. Iran is directly connected to all of that.
If any event has pushed us closer to WW3 it is the US's decision to preemptively attack Iran.
> Seems like money well spent.
Based on what outcome? The regime is still intact, if not stronger. They are likely more resolute in wanting a nuclear weapon, as we almost certainly wouldn't have attacked them if they had one. They have validated their control over the Straight of Hormuz and it's impact on our economy.
There were WMDs in Iraq too right?
Hundreds of billions spent on a war you lost and best case scenario is going back to the deal Obama made. Money well spent indeed.