Let's say you have the entirety of Earth's nuclear stockpile at your disposal (you don't have to use it all, and if you need it there's an infinite supply of extra ICBMs) and that every weapon you fire will have 100% accuracy as to where it explodes.
Is there any way these explosions could take place without causing any environmental (or at the very least Limited) damage to the planet's environment?
I'd imagine the problems with this would be that the explosion would either be too high in space for the EMP to affect anything, or too low in the Atmosphere to not cause damage.
Am I correct in this, or is a (mostly) worldwide nuclear EMP feasible without causing mass environmental damage?