Always remember that there is no upper limit to the size of a fusion weapon, fission weapons max out at around 500Kt as proved by the super oralloy
design used in the Ivy King test shot.
I think this puts the potential damage in perspective: I have been attending school at the University of Illinois Chicago and working for a firm down
there, and it would not take a very large weapon to destroy everything I know down there. And its to the point where I would be no less surprised to
wake up and look out my window and not see the downtown standing tall as I am seeing it there everyday. Atleast I can take solice in the fact that if
something were to happen when I am there during the week, I probably wouldn't even know what happened before I were vaporized or crushed.