[Fred25]

Unfortunately delivery is easy - as simple as a truck on Broadway or a ship in the Hudson.

There was a TV movie about this very topic, back in the ‘80s. I think it was aired on CBS. It was about how a small terrorist bomb blew up near New York or Boston. I think the show was called “Special Bulletin” or something like that.

[ZeitgeistSurfer]

It's clear that a multiple target "dirty" or regular nuke attack will happen here if we don't do something to forestall it. Seems to me that we need to make clear to the Arab world what the consequences will be for them if there is such an attack - no more Arab cities, no more Mecca or Medina, no more Arabs in fact. They must be deputized to find and kill the terrorists in their own countries and shut down the camps. Make it very clear to them they have no alternative. If we don't see any action in this regard, a demonstration of our intent may be necessary. Iraq comes to mind.