[dividedbyzero]

I don't think there are any space-based EMPs, at least no publicly known ones. There have been and perhaps still are plans to detonate high-yield nuclear weapons at high altitude above enemy territory to cause an EMP, but that is a very different situation from a CME solar storm. We're able to spot a CME hours in advance vs mere minutes for submarine-launched ICBMs, and the latter would only ever be deployed in the opening minutes of an all-out nuclear war, in which the electric grid and all grid-level precautions against solar flares are likely to be irrelevant, because most of its critical components would be vaporized or torn to shreds by attacks on ground targets anyway. Even just forcing the other side to keep burning money on military countermeasures that do work might be worth a few launchers and warheads.

[forgetfreeman]

Google starfish prime.

[dividedbyzero]

I don't think anything published about that test contradicts what I've written?

[forgetfreeman]

Ish. There seems to be some vocabulary fuckery going on around the term "orbital", most likely due to a poor choice of wording upstream. "Orbital" in the shit-blew-up-outside-the-atmosphere sense EMP strikes are absolutely phase 1A of any large scale nuclear attack and such capabilities are trivially executed by ICBMs with appropriate warhead selection and detonation altitude parameters. "Orbital" in the EMP-weapons-literally-orbiting-the-planet sense violates several international treaties. Given the levels of secrecy required to pull that off for any length of time it seems unlikely but is impossible to rule out entirely.

[dekhn]

the conclusion from starfish prime is that the approach they tried was a really bad idea.

[forgetfreeman]

Which is in keeping with all other applications of nuclear weapons attempted to date, so there is that.