A nuclear blast and having to witness a child dying of the radiation will be worse. When that happens in the USA, you'll see it.
That's my point. Nothing is worse than seeing your child die. I would hope that I would die too.
I heard there is a book out called "Osama's Revenge" that is supposed to document that Osama is planning to simultaneously detonate suitcase bombs in several U.S. cities. So you may be right about us having to witness an even greater horror.