The threat of huge EMP attacks has been common knowledge for at least five years.
And I gotta laugh at the spin of the linked article……..that those countries are doing something more horrible and evil than we would ever do. You just “know” that America already has the very same weapons in its arsenal.
It’s just another round of Mutually Assured Destruction. That’s a less than desirable method of deterrent. But way better than the fear mongering, total American vulnerability the article depicts.