If you always shoot down test missiles, then NK just has to keep firing test missiles until they build one that doesn't get shot down.
It's just not reliable enough to risk and as such is still a last resort measure.
Defending against a nuclear ICBM is not possible to do reliably. It's a sad reality.
As long as they don't rely on foreign supply for their missiles[1], they can manufacture them forever without having to pay anything to anybody.
[1]: it may sound like a bold hypothesis, but I doubt anyone would ship missile materials to North Korea. China could, of course, but that would be a bit risky diplomatically.
Historically, Iran, North Korea, and Pakistan cooperated on nuclear and missile tech, though I think that was engineering rather than parts.
And with NK slaves showing up in Polish shipyards, that is highly unlikely.
EM interference is why launch complexes use fiber. You don't want a lighting strike near a 2km cable to cause a squib to fire somewhere. Lighting protections also protect against EM attack.
I don't see how a b52 with a kerosene powered engine is anywhere near capable of delivering that same level of radiation.
https://en.wikipedia.org/wiki/Explosively_pumped_flux_compre...
The electrical load (output) can be a high power microwave source, or just blast out a massive EMP.
Seems like the weapon can be put in cruise missiles.
I'm not sure that news is true, shooting down a missile with something that doesn't fly and is not a laser would require an immense power, but anyway, using it on test missiles would be a really bad move: if you have a countermeasure you never use it until when it's really necessary (war) both to keep the surprise element and to give minimum information to the enemy about what you can or -even more important- cannot do.
This is reassuring propaganda plain and simple.
If the US and allies could take down a rocket they'd shoot down every NK test missle just to make a point.
Absolutely delusional saying this system can take down consumer drones and then extrapolate that out to a missle that is travelling at speeds measured in machs.
Even with drones I don't see how this is more effective than radio signal and gps hijacking which can control a malicious drone rather than destroy it in place. Various companies already do this incredibly well, shoutout to D13.