Sam if in 1945, Japan had nukes, would USA have dared nuking Japan? Japan had guns and US had guns, and they used it against each other...but the damage was not in the same scale as using a nuke would be.... the only reason US nuked Japan was cos it knew that Japan couldnt reciprocate. and Sam , why do u think all these military superpowers are so keen on ensuring an exclusive nuclear club...why is it that US and its allies, inspite of having the most sophisticated military arsenal, including nukes, are still the good boys..and the likes of Iran and Korea are dubbed as 'axis of evil' for wanting to build their own nukes?