I'd personally have to hope that we would wait a little while before retaliation if a nuke ever went off in an American city. I guess I fear the end results of us blanket nuking someone in revenge only to find out we should have done it to someone else. Of course, if a nuke did go off in a US city, the likely culprit would probably be quite apparent...
Not to the left. Since everybody hates us anybody could have done it...