HEMP , Neutron bombs, Aerosol bombs and Thermobaric bombs are strong enough to do any job, without the radioactive fallout which caused the problems of "re-taking" or "re-using" any area desired to be attacked. No need to screw up the whole world....BUT...who is "in Charge" and will decide which bomb goes where, explodes where and explodes how high in THE MATTER OF MINUTES still available in a HOT WAR???
Each of the senile, gray-haired, non-military idiots in charge who have a bunker to hide in (which they did NOT have to PAY FOR) and will be able to "wait it out" after the SHTF and we have to live in the aftermath.
They do not send their kids into the scrap, they do not have to eat the crap left over, they do not have to walk around after HEMP has stalled so many cars, (theirs will be EMP proofed), they will have clean water and enough food....need I go further?
We are the re-builders who have to survive and do the dirty work, like the widows in Germany after Hitler was responsible for destroying the entire generation of strong and healthy MEN...What a useless HERO he was...