If a nuke was detonated in a USA city would the perp likely be a country like Iran knowing it would be anihilated? Or would it be due to deception like the Reichstag fire, and a wanabee dictator, and those wanting an excuse to impose martial law and disarm Americans?
Maybe I’ve become overly cynical in my old age of the motives of our rulers and others who claim to serve us while dragging us off to costly war to democratize those who don’t want democratized.
This will actually be fairly easy to discern. If it's a city in the midwest, it's an internal action. If it's New York, LA, or Seattle, it's probably enemy action.
If it's Detroit, would anyone even notice?