Not funny
Now I'm not a pro-terrorist, or anti-war fanatic, but I don't think it's funny when people joke about blowing up a country with nuclear weapons. It's foolish to laugh at the idea of the murder (and yes, indiscriminate bombing of civilians is murder) of innocent civilians who suffer under a regime they have no control over. Americans must be more careful of assuming that nuclear weapons are something funny, or else the feeling of hostility felt by those who aren't fortunate will never end, and terrorists will always have an audience.