Comment by stackghost
7 days ago
Yes that's the orthodox doctrine of nuclear deterrent. To be truly effective you need a triad of land-based ICBMs, nuclear-armed submarines, and aircraft-based delivery systems so that your second-strike capability remains intact through any decapitation attempts.
If you don't have the triad then you need to brandish your capability more ostentatiously, like France does with its deliberate refusal to commit to a no-first-strike policy. This is (one of the many reasons) why North Korea does so much sabre-rattling: they don't have a (publicly known) nuclear triad for deterrence.
Just a note that the importance of the triad is a very American perspective on deterrence and most other countries don't seem to approach this the same way the US does.
The Russians really have a quad (they also have mobile, truck mounted ICBM's that form a significant part of their deterrent, offering some of the guaranteed second-strike advantages that the US gets from SSBN's- and which their SSBN program does not provide nearly as well as the USN does). The Chinese only recently added a manned aircraft leg of their triad with the JL-1. The Indians technically have a triad- just no silo based systems, all of their land based missiles are from TELs, and they only have two SSBN's and do not do alternate crews so more than 1/3 of the time they don't have any deterrent at sea. The Israeli's are not believed to have any sea-based ballistic missiles, their sea-based deterrent would be Popeye cruise missiles and so vulnerable to interception. The Pakistanis are still building their first sea-based deterrent. The French and the UK have no land-based missiles, they are only sea-based and airplanes. The South Africans invested in the Jericho missile more for its space launched capabilities than its warhead delivery abilities, and never really looked at anything sea-based, so far as is publicly known.
I don't agree regarding a quad vs a triad.
At risk of sounding like gpt, the triad is not silo/boomer/bomber, it's land-based/airborne/seaborne.
Whether or not the survivability of your land-based ICBMs are due to mobility or hardened bunkers doesn't change much at the strategic level.
I don't think they fill the same strategic purposes, though. The value of silo based missiles to the US is as a missile-sponge, taking most of the warheads from a Russian first strike and keeping them from American cities (forcing any Russian first-strike to be counter-force instead of counter-value). This is not particularly valuable, honestly, which is why only the USSR during the height of the Cold War (largely in reaction to Minuteman) and China very recently have also made the investment into large numbers of ICBM silos.(1)
I won't claim to be as much an expert on Russian doctrine, but they seem to consider their mobile missiles to be a survivable second strike weapon, while silo based missiles are obviously not. Because their boomer fleet does not offer the same assured second strike, they rely on those mobile missiles to play a greater deterrent role then the US does.
1: That is the official justification for the US silos. The real reason for silos is, if you want to build a truly insane number of strategic warheads, silos are the only way to afford it- ships and planes and even TELs are too expensive. So first the US (worried they were behind because of the Missile Gap) built a thousand Minuteman (then tripled the deployed warheads with MIRV on the Minuteman-III). Then the Soviets responded with 1000 SS-11s of their own. But if you are only building a few hundred warheads total, you don't bother with silos, they don't add as much value as other delivery mechanisms.
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> To be truly effective you need a triad of land-based ICBMs, nuclear-armed submarines, and aircraft-based delivery systems
The core parts for MAD land-based missile silos (to soak up the enemy's missiles) and submarines (to ensure a second strike). Planes are largely a diplomatic deterrent inasmuch as they're easy to send out and easy to recall.
But Pyongyang isn't playing MAD. It's playing credible threat. And for a credible threat, you just need missiles. (On land or on subs.) The point is that you raise the stakes of e.g. a Maduro operation to risking Los Angeles.
Strategic bombers are just as important because MAD itself is fundamentally a political and diplomatic tool. The reason you have strategic bombers is, as you correctly said, so that you can signal your posture and intent by stationing them, dispersing them, launching them, and (most critically) recalling them.
But again, because MAD first and foremost is a deterrent, you want to provide diplomatic offramps for both you and your adversary. This is crucial. Putting the B-52s on airborne alert sends a very strong message, but so does recalling them from airborne alert.
By their very natures, SSBNs and ICBMs are not capable of playing this role.
P5 by triad capability:
Looks like IN ought to get Airstrip One's seat?