North Korea, China and Russia able to use the "E-Bomb"?

[auroraglacialis]

North Korea may soon be able to strike USA with ultimate doomsday weapon that deactivates (nearly) all electronics

ICBMs typically carry nuclear warheads, and they can easily target cities on the West Coast such as Los Angeles or Seattle. But even this threat doesn't compare to the "doomsday weapon" that China or Russia could almost certainly launch right now: A high-altitude EMP weapon (HEMP for short, and I'm not joking).
[...]
Once detonated, the energy released by these weapons interacts with the Earth's magnetic field, producing an extremely fast and powerful electromagnetic burst that rushes to the ground at 94% the speed of light, slamming everything on the ground with as much as 50,000 volts per square meter at high amps.

Not surprisingly, such a phenomenon would fry virtually every piece of electronics they touch, as today's electronics are manufactured with delicate circuitry that simply cannot withstand such extreme voltage ranges.

Instantly taken out of service would be many automobiles, televisions, cell phones, air conditioners, airplanes, radios, military electronics, and many satellites. Even more worryingly, such an attack would also take out the backup generators and control electronics for active nuclear power plants