Maybe. In a small city they might. Major cities are being quietly monitored for radiation. The equipment that they use is so sensitive that they can tell who has had a stress test in the past month from twenty feet.
And that is just the stuff I know about.
We are in far more danger from a large conventional bomb. But it doesn't sound as scary.
ABSOLUTELY correct!
blow up a dirt bomb or nuke in this nation and I will be calling for all the middle east to be carpet nuked.