> protecting its citizens is of extreme moral importance
Given the number of our citizens that die from, eg, preventable diseases, that seems like a far, far higher moral call than a war against Iran.
If you are relating protecting citizens with current situation, NO country dares to attack US citizens in the US soil.
US, at this time, doesn't need to protect its citizens, especially in the US, from attacks by other nations, 0, none. No threat.