>>This sounds a bit hyperbolic.
>>Two nukes didnt destroy Japan.
Those weren’t detonated at high altitude.
http://en.wikipedia.org/wiki/Electromagnetic_pulse#Weapon_altitude
"One" or even a few wouldn't wipe us out, but it could quite well wipe out some other nation.
Since this is more the reality, then the big "it" boom-in-the-sky won't be launched from some other nations actual lands.
That leaves several other possible scenarios, none of which are pretty.
I'd prefer it if it came by ICBM (as Newt is rather ridiculously postulating is the present threat) for it would make nailing the sending party into the ground FUBAR'ed for nearly forvever, simple, simple, simple.
Newt is "close", and for some aspects, close does count -- in regards to nuclear weapons, but he's not quite precise. He might be ok as political historian, or even a politician himself, again, buy I'm glad he's not a ranking General in the Pentagon. He's no military tactician/strategist.
It wouldn't have mattered.
That was around 10 years before the transistor (and solid state devices and controls) were even invented.
Electronic equipment using vacuum tubes is pretty much immune.