It may not be very p.c to say it but the atomic bomb is the greatest weapon does the job of a weapon better than a sword or a gun. millions can be killed with it in the blink on an eye then many more thousands more from radiation. It might be an awfull thing but the a-bomb is the best weapon ever consieved...might not have the romantic leanings of a samurai sword. But it does the job better.
Do not be overcome by evil , but overcome evil with good -Romans 13:21