If it happens it will come to us in a ship, a truck, a commercial airliner etc etc etc. If it ever happens we will not know which rouge nation did it. Therefore the only logical answer would be to attack the military infrastructure of each and every rouge nation that wishes us harm and has the means to produce nuclear weapons. When I say attack I mean with thermonuclear weapons.
I agree. The unfortunate problem with using nukes is the fallout that would contaminate other countries freindly to us. Thats a hole we would have a tough time digging ourselves out of. If there was such a thing as a nuke with no fallout and any destruction from a detonation was localized, then this might be more feasable.
This may shed some light on this:
http://prophecy.org/167pro.htm
This prophet says that an atomic bomb will be detonated in San Francisco in the year of the Ram, which the next one is in 2015. The year of the Ram happens every twelve years. This prophet has been amazingly accurate, I have followed him and the site since 1995.
>>If it ever happens we will not know which rouge nation did it.
Nuclear materials have known signatures. We'll likely know the origin of the materials from the fallout.
I'm not very optimistic about this.