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UK Nuclear Deterren...
 

UK Nuclear Deterrent

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It would appear that parts of the world are in turmoil, friends aren't who they used to be.

I've read a bit recently about how the French arsenal is 'independent' ie wholly owned and manufactured by France. (Though perhaps reliant on American satellites)

However the British Trident missiles are in effect American.

How much control do we have of them. If we seriously fall out with the USA will we still be able to control them?

Or do the Americans actually have a back door into the system and are able to say 'Alexa switch off UK Trident'. At which point we have some very expensive junk!


 
Posted : 09/03/2025 8:41 pm
 Del
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No. We're to a large effect independent, in that we sort the warheads ourselves. The missiles are on a rotating basis back to the US for stockpile/maintenance, but we don't loose capability overnight if we really fall out with them.


 
Posted : 09/03/2025 8:49 pm
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.....


 
Posted : 09/03/2025 8:59 pm
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When the submarine is at sea it has operational independence but still needs the right codes to initiate a launch (I worked with a guy who did that job on T-class submarines) but the weapons control systems is proprietary US technology. It is contained within a special cabinet on the submarine, but the software etc is independent of the rest of the combat system.


 
Posted : 09/03/2025 9:07 pm
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Coincidentally the UK Defence Journal has explained all this very day.

Can't think why 🙂

EDIT a link(s) would help https://ukdefencejournal.org.uk/heres-how-britains-nukes-are-operationally-independent/ AND https://ukdefencejournal.org.uk/uk-confirms-nukes-completely-operationally-independent/

Different aspects in each article


 
Posted : 09/03/2025 9:14 pm
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The nuclear warheads are UK designed and built by AWE, but the delivery system, the "missile" is US built. As above, in the case of a complete pull out by the US, we wouldn't lose capability overnight, but it wouldn't be too long before maintenance issues became critical. Theoretically we could talk to the French or other European partners about collaborating on new missiles. There has been a lot of chat about the UK and France providing a European "nuclear umbrella" recently. So with some burden sharing and engineering expertise from the likes of Germany, it could be done, but not quickly. Our subs are built around Trident though, so adapting a new system to them wouldn't be easy, cheap or quick.   There are other delivery options, such as aircraft (as the UK used to do with the V bombers) but these are far more vulnerable to preemptive strike than sub launched weapons.  Short answer, without the US we wouldn't lose all capability, but at least in the short term it would be significantly degraded.


 
Posted : 09/03/2025 9:17 pm
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I thought it was the MIRV parts of the UK deterrent that depended totally on the US.

 

I may well be wrong, though.

 

It'd be daft for any bad actors to start a mutually destructive and expensive nuclear confrontation, though. Just seeing how much damage can be done with some lies on social media, some bot farms and a few bungs to local opportunist populists.

 

🤷‍♂️


 
Posted : 09/03/2025 9:19 pm
kelvin reacted
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It’s also such a long time since I did my security clearances that I don’t know what bits I’m not supposed to say! 🤡


 
Posted : 09/03/2025 9:27 pm
onewheelgood reacted
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"still needs the right codes to initiate"

1783?

90210?

1234?

1488, considering the present occupants of the White House?


 
Posted : 09/03/2025 10:37 pm
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 The code is actually 00000000 

Easy to remember.

But not much use unless you can get your hands on a Vanguard-class submarine with the Trident operating system.


 
Posted : 09/03/2025 11:03 pm
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The nuclear warheads are UK designed and built by AWE, but the delivery system, the "missile" is US built.

Delivery system always sounds fairly innocuous. The Russian Baltic fleet was out when the missile attempted to deliver to Kaliningrad so we've left the warhead with a neighbour in Minsk for them to collect later.


 
Posted : 10/03/2025 1:19 am
pondo reacted
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Have to say that if it did all go tits up, then Britain's complete nuclear arsenal would be a fart in the wind, in comparison to what was coming our way. In effect would just be launched as an act of vengeance/mass murder.


 
Posted : 10/03/2025 2:22 am
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Yes it's relatively small Dyna, but there's enough to take out every Russian launch site (apart from the subs), and naval base. If we're going down I would want them taken out to give our surviving allies more of a chance. I don't think that's 'an act of vengeance or mass murder' but military useful for friendly nations not yet targeted to increase their chances of being able to defend themselves.

I'm assuming that's where our are aimed of course, I would assume the  Russians would be more likely to target cities


 
Posted : 10/03/2025 2:46 am
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Posted by: dyna-ti

Have to say that if it did all go tits up, then Britain's complete nuclear arsenal would be a fart in the wind, in comparison to what was coming our way. In effect would just be launched as an act of vengeance/mass murder.

That's how nuclear deterrence works. If the other side launches an attack on you, you destroy their cities in retaliation.

 


 
Posted : 10/03/2025 5:14 am
ernielynch reacted
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Yep it’s the big stick you don’t ever want to use,don’t forget that in 1991 Ukraine was the third greatest nuclear power,with all the left over USSR bits and bobs.

In 1994, Ukraine agreed to transfer these weapons to Russia for dismantlement and became a party to the Treaty on the Non-Proliferation of Nuclear Weapons, in exchange for economic compensation and assurances from Russia, the United States and United Kingdom to respect the Ukrainian independence and sovereignty in the existing borders.


 
Posted : 10/03/2025 7:49 am
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I'm assuming that's where our are aimed of course, I would assume the  Russians would be more likely to target cities

Ours are targeted at Moscow allegedly,that’s the deterrent part, 52 (or 54 can remember the advert)mins from launch to no more Moscow, even if they manage to intercept any there will be enough to do it.

 


 
Posted : 10/03/2025 8:00 am
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Posted by: dudeofdoom

Ours are targeted at Moscow allegedly

Can't we redirect one towards Mar-a-Lago? Maybe a second one to wherever Elon happens to be as well.


 
Posted : 10/03/2025 8:36 am
pondo and Kuco reacted
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Have to say that if it did all go tits up, then Britain's complete nuclear arsenal would be a fart in the wind, in comparison to what was coming our way.

A "fart in the wind" that would destroy all Russia's major cities and kill tens of millions. Russia knows this and we know what would be coming our way. Which is hopefully 😳 why they will never be used.

The fact that they have a lot more is irrelevant, theirs have to be spread more thinly. Their nuclear arsenal was designed to be targeted all across the US and Western European countries. Ours only have one country in their sights.


 
Posted : 10/03/2025 8:37 am
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Is a British (or French,.or possibly American) threat less of a threat because of the western reluctance to target civilian areas compared to Russia? I mean in terms of recent conventional wars, like Ukraine, where Russia is actively targeting civilians, we are insisting Ukraine doesn't (and TBF they might not anyway) or how the Russians dealt with Allepo compared to our rules of engagement in Iraq?

What I'm saying is does this reticence make the Russians take our threat less seriously than we take theirs and therefore more likely to launch a first strike if they don't believe that we would actually retaliate? Or would just retaliate against military targets rather than dozens of cities. They can't be certain we wouldn't so it's a risk, but I'd be absolutely certain they would if we launched first.


 
Posted : 10/03/2025 8:46 am
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What I'm saying is does this reticence make the Russians take our threat less seriously than we take theirs and therefore more likely to launch a first strike

No. We, the US etc. don't openly discuss nuclear targeting. Condemning the killing of civilians in a regional, conventional war is one thing. Retaliation against a strike that is likely to kill most of your own population and destroy your county is another. It has to be assumed that we would respond in kind or the threat is empty. It's a very grim calculation, but that's how it works. Mutually assured destruction.


 
Posted : 10/03/2025 8:56 am
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I assume the retaliatory strike plans are classified but I'd guess several scenarios including targeting cities of whoever launched the first strike. I see little chance the government at the time would decide to abandon those plans and try to 'play nice' by just nuking military targets instead, not if UK cities had already been hit - and pretty sure the Russians understand that and would factor it in to their decision-making.

We might be more reluctant (n reality vs what might be the official position) to respond to a limited nuclear strike against a UK military target with our own nukes as we'd want to do everything possible (short of capitulation) to prevent escalation to the point cities became targets.


 
Posted : 10/03/2025 9:05 am
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Given the recent change of sides of our erstwhile ally, the US, having our own nuclear deterrence isn’t looking like such a bad idea. Prerhaps we should be extracting minerals from countries under our nuclear umbrella? ¯\_(ツ)_/¯ (Joking!)


 
Posted : 10/03/2025 9:19 am
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Maybe a second one to wherever Elon happens to be as well.

I'm not sure anything has the range to reach Cloud Cuckoo Land.  


 
Posted : 10/03/2025 9:20 am
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‘Limited’ nuclear strike 🙂

Seems like it was years ago that I grew in the 80’s with the continual threat of nuclear war,thought it would be all over when the USSR fell but hey here we are again.


 
Posted : 10/03/2025 9:23 am
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I'm not sure anything has the range to reach Cloud Cuckoo Land.  

Dunno there’s that minor inconvenience of a nuclear winter.


 
Posted : 10/03/2025 9:28 am
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Is a British (or French,.or possibly American) threat less of a threat because of the western reluctance to target civilian areas compared to Russia?

My understanding is that there are sufficient nukes aimed at Moscow to obliterate it several times over. I don't think we've ever been squeamish about the ultimate target for these things. 


 
Posted : 10/03/2025 9:35 am
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Posted by: dovebiker

It’s also such a long time since I did my security clearances that I don’t know what bits I’m not supposed to say! 🤡

 

nothing damn it say nothing

 


 
Posted : 10/03/2025 9:44 am
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I assume the retaliatory strike plans are classified but I'd guess several scenarios including targeting cities of whoever launched the first strike.

It doesn't matter what we would do, what matters is that whoever we were likely to target doesn't know what we would do and can't guess. Planning to launch their strike (any strike) becomes hugely complicated, thereby removing the option of tactical level strikes (as one example) just in case.

This tends to keep warfare either conventional or strategic nuclear in which case it's MAD.

As I said on the Ukraine thread, consideration of cluster munitions and anti-personnel mines are avenues that we now have to explore so that we can match the conventional weapons of dozens of other states who are free from those conventions. That lowers our need to consider a nuclear option

Developing other launching solutions for the UK is another option to complicate the planning of opposing states, spread that out, give other NATO states a say in deployment, move, change, keep them guessing. France is already part way on this path with both air and sea-launched missiles, but gave up their land-based option three decades ago


 
Posted : 10/03/2025 9:52 am
 dazh
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Oh great, another armchair generals thread. I always find debate on this stuff fascinating. Casual discussion about the murder of millions of innocent civilians like it's a football match. It's probably about the most distasteful and macabre discussion subject on this forum. Not even sure why it isn't banned, if we were talking about the willing murder of politicians or groups of people in the UK the thread would be closed in a second. 


 
Posted : 10/03/2025 10:19 am
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The Trident D5 is well understood and relatively old technology which we could, if required, recreate using MBDA and BAE Systems.  The control system is more difficult as it's not something we routinely interrogate, nor do we have comparable systems in another field.  The PAAMS system developed by EUROPAAMS is probably the closest.  The MIRVs are ours, designed, maintained and targeted by us. 

A fully independent, replacement deterrent is possible within the lifetime of the current missiles, but would be expensive as it would require infrastructure for manufacture, test and refurbishment that we do not currently have.


 
Posted : 10/03/2025 10:23 am
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Oh great, another armchair generals thread

Oh behave, It's nothing like that. Most (if not all) of the folks on here have lived in the shadow of these things our entire lives, how else are we supposed to rationalise the destruction of us all? Ignore it? wring our hands endless about it? News flash, we live on a spinning hunk of rock travelling through an desolate and un-caring universe, life could be wiped out in a millisecond, and it wouldn't matter a jot. 

 


 
Posted : 10/03/2025 10:24 am
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Casual discussion about the murder of millions of innocent civilians like it's a football match.

No one has said this it all!.  Indeed everyone has said there's nothing casual about it - it's end of the world stuff.  

 

With exception to on occasional glib comment about Musk and Trump, everyone is focussing on the practicalities of it.  It's more a discussion about politics and engineering capabilities than it is about warfare and generals   


 
Posted : 10/03/2025 10:29 am
jamesoz reacted
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Posted by: dazh

Oh great, another armchair generals thread. I always find debate on this stuff fascinating. Casual discussion about the murder of millions of innocent civilians like it's a football match. It's probably about the most distasteful and macabre discussion subject on this forum. Not even sure why it isn't banned, if we were talking about the willing murder of politicians or groups of people in the UK the thread would be closed in a second. 

You don't have to read it

 


 
Posted : 10/03/2025 10:34 am
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It’s also such a long time since I did my security clearances that I don’t know what bits I’m not supposed to say!

For starters, this bit...

 

I did my security clearances 


 
Posted : 10/03/2025 10:38 am
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Oh great, another armchair generals thread. I always find debate on this stuff fascinating. Casual discussion

Oh great, another abusive opening post by dazh. What are the alternatives to "casual discussion"? Hysterical discussion? No discussion at all? This is the chat forum. This is one of the most significant and concerning things that is happening in the world right now. As much as we don't like it (I have kids, a nice life I'd like to hold onto thanks) the mechanics of it are relevant. Why do you come on here apart from to insult people, with your sick insinuations that people are relishing this?


 
Posted : 10/03/2025 10:58 am
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Posted by: dazh

Oh great, another armchair generals thread. I always find debate on this stuff fascinating. Casual discussion about the murder of millions of innocent civilians like it's a football match. It's probably about the most distasteful and macabre discussion subject on this forum. Not even sure why it isn't banned, if we were talking about the willing murder of politicians or groups of people in the UK the thread would be closed in a second. 

Why on Earth can't we discuss it? This is a very real thing that concerns everyone on the planet; and for me it's been a rather morbid interest ever since I was a boy and saw RAF Fylingdales from the car window. Nobody is glorifying or promoting anything, just talking about it.

To be honest Nuclear War is more of a geopolitical thought experiment to most people than anything else. If anything there is not enough casual discourse on it, and the general public's idea of how it all works is very lacking. 

 


 
Posted : 10/03/2025 11:18 am
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Posted by: yosemitepaul

the French arsenal is 'independent' ie wholly owned and manufactured by France. (Though perhaps reliant on American satellites)

I would hope the French use Galileo. Which we probably can't, post Brexit.


 
Posted : 10/03/2025 11:24 am
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Posted by: dazh

Casual discussion about the murder of millions of innocent civilians like it's a football match.

Since we're all the civilians in the firing line, I think it's a very important conversation to be having.

Like it or not there are people and computer models considering this stuff on a daily basis.


 
Posted : 10/03/2025 11:29 am
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Oh great, another armchair generals thread. I always find debate on this stuff fascinating. Casual discussion about the murder of millions of innocent civilians like it's a football match. It's probably about the most distasteful and macabre discussion subject on this forum. Not even sure why it isn't banned, if we were talking about the willing murder of politicians or groups of people in the UK the thread would be closed in a second.

daz, what exactly is your point?

Posted by: dazh

No one questions the engineering ability. It's the political will and ability of EU populations to swallow the financial and other sacrifices it will require. At a time when the world should be pouring all it's resources into mitigating and delaying climate change, instead it'll be focusing the effort and resources on building weapons of mass destruction. I doubt many voters in the EU will be willing to swallow that. 

The problem is that others in the world don't want to mitigate and delay climate change while their economies positively depend on exporting fossil fuels.

It's also a political reality that some of those same states want to invade independent states for "reasons", despite the simple option of going home existing. It's also a reality that they are forming an axis of other nuclear states around them to fight on their behalf and take an active part in their war.

There are other independent states that are being shaped for invasion if Ukraine falls and all are in Europe. There's plenty for you to think about without worrying about a discussion amongst a group of cyclists.


 
Posted : 10/03/2025 11:36 am
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Posted by: nickc

Is a British (or French,.or possibly American) threat less of a threat because of the western reluctance to target civilian areas compared to Russia?

Maybe we can ask some Iraqis and Afghans and Yemenis about the "western reluctance to target civilian areas"...?


 
Posted : 10/03/2025 11:44 am
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I've read a bit recently about how the French arsenal is 'independent' ie wholly owned and manufactured by France. (Though perhaps reliant on American satellites)

I would hope the French use Galileo. Which we probably can't, post Brexit.

There are plenty of satellites up there 🙂 Earlier this week France added CSO 3 to the constellation

The MUSIS programme

This programme includes three optical space components (CSO) satellites, a Mission Ground Segment, and an User Ground Segment allowing access to German SARah satellites and the realization of the CIL allowing access to Italian CSG satellites. These resources provide situational awareness and strategic intelligence capabilities, as well as support for crisis prevention and anticipation, and for the planning and conduct of operations. https://www.airbus.com/en/newsroom/press-releases/2025-03-ariane-6-launches-cso-3-double-success-for-france-and-europe


 
Posted : 10/03/2025 11:53 am
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daz, what exactly is your point?

I think it's just a typical example of Daz overemphasizing  a vaguely valid point. The casual nature which the subject is being discussed is slightly alarming imo, but it simply reflects discussions which are being reported in the media, which I also find slightly alarming. 

The casual nature of discussions concerning a new nuclear arms race and an expansion of nuclear proliferation, as being discussed in the media due to political developments in the US, should be a worry because nuclear war is simply not a realistic option.


 
Posted : 10/03/2025 11:58 am
 dazh
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If we're going down I would want them taken out to give our surviving allies more of a chance. I don't think that's 'an act of vengeance or mass murder'

Think it's comments like this which I dislike the most. Killing millions of people in response to millions of our people being killed is somewhat vengeful and murderous. I'm not naive enough to think it won't happen in the highly unlikely scenario that Russia launches nukes against us but by that time the game is already lost and there's no need to care about what comes next because whoever survives will be back in the stone age (it'll be worse actually). 


 
Posted : 10/03/2025 11:59 am
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AFAIK the last few PMs have written in their "final instructions" to sub captains that they were to take no retaliatory action should a nuclear armed country launch nukes at us. 


 
Posted : 10/03/2025 12:15 pm
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Posted by: elray89

This is a very real thing that concerns everyone on the planet; and for me it's been a rather morbid interest ever since I was a boy and saw RAF Fylingdales from the car window

In my teenage years my father (in the RAF) was stationed at Fylingdales and a while before that in Gutersloh (Germany) which was the main harrier base at the time (and key to trying to stop a Soviet ground invasion through Germany) so I've grown up living close to prime first strike locations and ended up with more than a passing interest in it to.


 
Posted : 10/03/2025 12:26 pm
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