What is it about the US that you're scared of one little country that may, or may not, have the bomb. At the moment you are more likely to suffer at the hands of one nutter who has decided that he doesn't like people who fill up at petrol stations (among other things)in Washington. You should really fear the NRA more, since it is these people who are (indirectly) responsible for killing a lot more Americans than a possible North Korean bomb ever will.