In retrospect, I should have been more clear in my claim on submarine invulnerability, which was mostly meant to apply to the sort of thing you could reliably do during an attempt to preemptively take out a nuclear arsenal. And yes, obviously more to the US than elsewhere. But note that the link you provide is to an SSN, not an SSBN, and MAD is not a new technology. The first deployment of that I’m aware of was to guard the Straits of Gibraltar in WWII, and if anything it’s being phased out these days.
In retrospect, I should have been more clear in my claim on submarine invulnerability, which was mostly meant to apply to the sort of thing you could reliably do during an attempt to preemptively take out a nuclear arsenal. And yes, obviously more to the US than elsewhere. But note that the link you provide is to an SSN, not an SSBN, and MAD is not a new technology. The first deployment of that I’m aware of was to guard the Straits of Gibraltar in WWII, and if anything it’s being phased out these days.