Meh, if it happens, kiss the world as we know it goodbye. A nuclear strike on the U.S. of that level would spell nothing short of A-R-M-A-G-E-D-D-O-N!
Although I do find it hard to believe that if the terrorists had any type of fissile nuclear weapon they would have used it already.
However, I could just be be in complete denial due to the fact that I can't comprehend the magnitude of an event occurring like that. The effect it would have on the world is just so unimaginable. It is scary and anything is possible.
