UK's Nuclear Deterrent Debate

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Department: Cabinet Office

UK's Nuclear Deterrent

Julian Lewis Excerpts
Monday 18th July 2016

(7 years, 9 months ago)

Commons Chamber
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Julian Lewis Portrait Dr Julian Lewis (New Forest East) (Con)
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I have often had the pleasure of debating this topic with the right hon. Member for Islington North (Jeremy Corbyn), both in and outside the House, but never in either of our wildest dreams or nightmares did we imagine that one day he would end up as leader of the Labour party. It only goes to show the unpredictability of political developments.

After the Falklands war, opponents of our strategic deterrent often pointed out that our Polaris submarines had done nothing to deter Argentina from invading the islands. However, there never was and never will be any prospect of a democratic Britain threatening to launch our nuclear missiles except in response to the use of mass destruction weapons against us. But just because we would baulk at threatening to launch nuclear weapons except when our very existence was at stake, that does not mean that dictators share our scruples, our values or our sense of self-restraint.

An example from history will do. Following the horror of the poison gas attacks in the first world war, it was widely expected that any future major conflict would involve large-scale aerial bombardments drenching cities and peoples with lethal gases. Why did Hitler not do that? Because Churchill had warned him that British stocks of chemical weapons greatly exceeded his own, and that our retaliation would dwarf anything that Nazi Germany could inflict. Poison gases are not mass destruction weapons, but nerve gases are, and Hitler seriously considered using them against the allies in 1943. He did not do so because his principal scientist, Otto Ambros, advised him that the allies had almost certainly invented them too. In fact, we had done no such thing and were horrified to discover the Nazi stocks of Tabun nerve gas at the end of the war. That was a classic example of a dictator being deterred from using a mass destruction weapon by the mistaken belief that we could retaliate in kind when actually we could not. Such examples show in concrete terms why the concept of deterrence is so important in constraining the military options available to dictators and aggressors.

I shall briefly list the five main military arguments in favour of continuing the specific British policy—pursued by successive Labour and Conservative Governments—of maintaining, at all times, a British minimum strategic nuclear retaliatory capacity.

The first military argument is that future military threats and conflicts will be no more predictable than those that engulfed us throughout the 20th century. That is the overriding justification for preserving the armed forces in peacetime as a national insurance policy. No one knows which enemies might confront us between the years 2030 and 2060—the anticipated lifespan of the Trident successor system—but it is highly probable that at least some of those enemies will be armed with mass destruction weapons.

Angus Brendan MacNeil Portrait Mr MacNeil
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Will the right hon. Gentleman give way?

Julian Lewis Portrait Dr Lewis
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No, I am sorry. I normally like to take interventions, but I will not, because of the time pressure.

The second argument is that it is not the weapons themselves that we have to fear but the nature of the regimes that possess them. Whereas democracies are generally reluctant to use nuclear weapons against non-nuclear dictatorships—although they did against Japan in 1945—the reverse is not the case. Let us imagine a non-nuclear Britain in 1982 facing an Argentina in possession of a few tactical nuclear bombs and the means of delivering them. Retaking the islands by conventional means would have been out of the question.

The third argument is that the United Kingdom has traditionally played a more important and decisive role in preserving freedom than other medium-sized states have been able or willing to do. Democratic countries without nuclear weapons have little choice but to declare themselves neutral and hope for the best, or to rely on the nuclear umbrella of powerful allies. The United Kingdom is a nuclear power already, and it is also much harder to defeat by conventional means because of our physical separation from the continent.

The fourth argument is that our prominence as the principal ally of the United States, our strategic geographical position and the fact that we are obviously the junior partner might tempt an aggressor to risk attacking us separately. Given the difficulty of overrunning the United Kingdom with conventional forces, in contrast to our more vulnerable allies, an aggressor could be tempted to use one or more mass destruction weapons against us on the assumption that the United States would not reply on our behalf. Even if that assumption were false, the attacker would find out his terrible mistake when and only when it was too late for all concerned. An independently controlled British nuclear deterrent massively reduces the prospect of such a fatal miscalculation.

The fifth and final military argument is that no quantity of conventional forces can compensate for the military disadvantage that faces a non-nuclear country in a war against a nuclear-armed enemy. The atomic bombing of Japan is especially instructive not only because the Emperor was forced to surrender, but because of the reverse scenario: if Japan had developed atomic bombs and the allies had not, an invasion of Japan to end the war would have been out of the question. The reason why nuclear weapons deter more reliably than conventional ones, despite the huge destructiveness of conventional warfare, is that nuclear destruction is not only unbearable, but unavoidable once the missiles have been launched. The certainty and scale of the potential retaliation mean that no nuclear aggressor can gamble on success and on escaping unacceptable punishment.

Opponents of our Trident deterrent say that it can never be used. The two thirds of the British people who have endorsed our keeping nuclear weapons as long as other countries have them, and continue to endorse that in poll after poll—as well as in two general elections in the 1980s—are better informed. They understand that Trident is in use every day of the week. Its use lies in its ability to deter other states from credibly threatening us with weapons of mass destruction. Of course, the British nuclear deterrent is not a panacea and is not designed to forestall every kind of threat, such as those from stateless terrorist groups, but the threat that it is designed to counter is so overwhelming that no other form of military capability could manage to avert it.

If the consequence of possessing a lethal weapon is that nobody launches it, while the consequence of not possessing it is that someone who does launches it against us, which is the more moral thing to do—to possess the weapon and avoid anyone being attacked, or to renounce it and lay yourself and your country open to obliteration? If possessing a nuclear system and threatening to launch it in retaliation will avert a conflict in which millions would otherwise die, can it seriously be claimed that the more ethical policy is to renounce the weapon and let the millions meet their fate? Even if one argues that the threat to retaliate is itself immoral, is it as immoral as the failure to forestall so many preventable deaths?

Moral choices are, more often than not, choices to determine the lesser of two evils. The possession of the nuclear deterrent may be unpleasant, but it is an unpleasant necessity, the purpose of which lies not in its ever being fired but in its nature as the ultimate insurance policy against unpredictable, future, existential threats. It is the ultimate stalemate weapon, and in the nuclear age stalemate is the most reliable source of security available to us all.

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Edward Leigh Portrait Sir Edward Leigh (Gainsborough) (Con)
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We have been debating the issue of whether we should have an independent nuclear deterrent for 70 years. I suppose Ernest Bevin summed it up well. We have already heard the quotation about walking naked into the conference chamber, but Bevin said—only he could speak like this:

“We’ve got to have this thing over here, whatever it costs. We’ve got to have the Union Jack on top of it.”

Like all of us, I have thought about this issue for many years, and, like most people, I have reluctantly concluded that we must have an independent nuclear deterrent. However, the debate is not just about whether or not we have an independent nuclear deterrent. I was campaigning with my right hon. Friend the Member for New Forest East (Dr Lewis) 30 years ago in the Coalition for Peace through Security. The argument was about the existence of the independent nuclear deterrent, and we were supporting Michael Heseltine against unilateralists, particularly in the Labour party.

This is a serious debate in which we have to ask what sort of independent nuclear deterrent we want. I think it is our general conclusion that an independent nuclear deterrent based on submarines is the only viable form of a deterrent because it is the most undetectable given modern technology. I have no ideological qualms with either an independent nuclear deterrent or one based on submarines, but those who argue in favour of Trident have to keep making the case, because during the cold war the threat was clear and known, and an independent nuclear deterrent based on ballistic missiles designed to penetrate Moscow defences made a great deal of sense; we knew who would be striking us, and we knew who to strike back against, and this mutuality of awareness was what kept the cold war cold. Those who argue against a nuclear deterrent have to meet this fact of history: the existence of nuclear weapons kept the cold war cold.

Julian Lewis Portrait Dr Julian Lewis
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To support what my hon. Friend has just said, if there had not been many conflicts going on in other parts of the world where the nuclear balance of terror did not apply during the cold war, it would be possible to argue that nuclear deterrence had played no part, but the fact is that communist regimes—proxy clients, as it were, for the superpowers—were fighting each other all over the globe. The one area where communism and capitalism did not fight each other was in Europe, because that is where the balance of power and the balance of terror was doing its work.

Edward Leigh Portrait Sir Edward Leigh
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Of course I agree with that; I think that is a fact of history that is generally recognised. We have heard many powerful speeches—in particular those by the hon. Member for Gedling (Vernon Coaker) and my hon. Friend the Member for Tonbridge and Malling (Tom Tugendhat)—making the case for the independent nuclear deterrent, but I say to my colleagues who made those powerful speeches that, fair enough, we are going to have an independent nuclear deterrent, but it is not good enough to say that the cost is not an issue. I am looking at this purely as a longstanding member of the Public Accounts Committee, and I say to my hon. Friend the Member for Harwich and North Essex (Mr Jenkin) that a total cost of £31 billion plus a contingency of £10.6 billion plus an ongoing cost of 6% of the defence budget is a lot of money, and we must constantly probe the Government, question them and ask whether we are getting good value for money. I accept the arguments and I have read the reports, and I know all the alternatives have problems, but we simply cannot give a blank cheque to the military-industrial complex; we cannot, as good parliamentarians concerned with good value for money, stop questioning British Aerospace and other providers all over the country on whether they are providing good value for money.

The cross-party Trident commission talked about three possible threats: the re-emergence of a cold war-style scenario; an emerging new nuclear power engaging in strategic competition with the UK; or a rogue state or terrorist group engaging in an asymmetric attack against the UK. The commission found that there were questions about whether this particular system—which is what I am talking about; I am not talking about arguments in favour of an independent nuclear deterrent—would be viable against these threats, so we must require the Secretary of State and the MOD to go on answering these questions.

I am probably not making myself popular with Members on either side of the House who have very strong views, but when I came to this place one of the first ways I irritated a sitting Prime Minister—Mrs Thatcher—was to team up with David Heathcoat-Amory and question whether we needed a ballistic missile system and whether Cruise missiles would not be a viable alternative. I know that those who sit on the Defence Committee, who will know much more about defence, have dismissed this, but in recent years the American Government have converted four of their ballistic missile-carrying submarines into submarines that carry Cruise missiles.

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Roger Godsiff Portrait Mr Godsiff
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The UK leases the missiles from America, where they are made, maintained and tested. Our four submarines have to go to the American naval base in Georgia to have the missiles fitted. That is a fact. It is of course said by those who support renewal that we have “operational independence”. Bearing in mind that we do not own the missiles but lease them from America, I just do not believe that there is any scenario in which a British Prime Minister would authorise a submarine commander to use the nuclear weapons anywhere in the world without first notifying the Americans.

Julian Lewis Portrait Dr Julian Lewis
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I appreciate what the hon. Gentleman is saying, and he is being very reasonable in his approach. The point about the second centre of decision making, which both Republican and Democrat American Governments have supported since 1958, is about the danger that another country might think it could pick off the UK without the Americans responding on our behalf. They probably would respond but it would be too late by the time the aggressor found that out. That is why knowing that the UK can defend itself is welcomed by the Americans, so that no fatal miscalculation of that sort can be made.

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James Cartlidge Portrait James Cartlidge
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If we had the ability. The nuclear weapon is there for one thing only: to defend this country in the case of existential invasion. It is nothing to do with the terrorist threat or wars such as we had in Iraq. It is that one overriding thing. It is a guarantee of our absolute freedom and existence.

People talk about cost. We cannot have limitless cost. We must have discipline. There can be no blank cheque, but let us talk about some figures that we know definitively. In the first world war 10 million lives were lost. In the second world war 73 million lives were lost, mainly civilians. How many since then? Not a single one in a world war. That has not been a coincidence. Nuclear weapons are horrific, but they have kept the peace.

Julian Lewis Portrait Dr Julian Lewis
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To take my hon. Friend back to the earlier intervention, it is a fact that both Germany and the allies were racing to invent the atomic bomb. There is no doubt that if the Germans had got the atomic bomb first, they would have used it against us, and if we had got the atomic bomb, we would have used it against them, just as the allies did against Japan to bring the war to an end.

James Cartlidge Portrait James Cartlidge
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My right hon. Friend is right. I do not want to go back over the historic debate but there are those who argue that if the Americans had not used those atomic bombs, the death count of US troops having to invade the Japanese mainland would have been astronomical. No one wants ever to have to use that weapon. It is an horrific thing.

I conclude with what, to me, is the fundamental point. Nuclear weapons are the single most horrible thing ever invented by man, but they have given us the most beautiful thing and we should never take it for granted. They have given peace in our time to every generation represented in this House, and we should not take that for granted. Instead of voting for complacency and relying on others to defend us, we must vote to stand firm and to deliver and guarantee that peace for many more generations to come.

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Caroline Lucas Portrait Caroline Lucas (Brighton, Pavilion) (Green)
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Today’s vote and our decision about Trident are at the heart of what kind of future we want for ourselves and our children. However, it is also about the hard evidence and what we mean by safety in an uncertain and changing world.

The theory that having nuclear weapons makes us safer is entirely unproven, and nor can it be proven. As David Krieger from Waging Peace writes:

“In logic, one cannot prove a negative, that is, that doing something causes something else not to happen. That a nuclear attack has not happened may be a result of any number of other factors, or simply of exceptional good fortune.”

Indeed, many military experts argue that, in fact, nuclear weapons make us less safe, primarily because their very existence increases the likelihood that they will be used and contributes to the amount of nuclear material circulating around the world.

Back in 2014, senior military, political and diplomatic figures, including former Conservative Foreign Secretary Sir Malcolm Rifkind, former Defence Secretary Des Browne and former Foreign Secretary Lord Owen, came together with the explicit aim of

“shining a light on the risks posed by nuclear weapons.”

They said:

“We believe the risks posed by nuclear weapons and the international dynamics that could lead to nuclear weapons being used are underestimated or insufficiently understood by world leaders.”

The Government’s main argument for replacing Trident appears to be that it is the ultimate insurance in an uncertain world, but what they fail to acknowledge is that our possession of nuclear weapons in contravention of the non-proliferation treaty is exacerbating that uncertainty—it is leading to the very scenario that it is designed to avoid.

Nor have the advocates of nuclear weapons ever explained why, if Trident is so vital to protecting us, that is not also the case for every other country in the world. How can we possibly try to deny other countries the right to acquire nuclear weapons if we are upgrading our own nuclear weapons? Do proponents of Trident renewal genuinely believe that a world where all countries have nuclear weapons would be safer than the one we live in today?

Such immunity to reason means that there is a blinkered approach to the heightened risk of accidents or threats to UK nuclear weapons, whether that is in Scotland, at the Faslane and Coulport bases, or in England, at AWE Aldermaston and Burghfield, or whether it is in relation to the nuclear warhead convoys taken out on our public roads, such as the M4 and the M25—indeed, some were seen on the M74 just a few weeks ago—and which go through small villages, sometimes up to a dozen times a year.

There is also little recognition of the fact that nuclear weapons systems are themselves fallible. According to a quite shocking report by Chatham House, there have been 13 incidents since 1962 in which nuclear weapons have nearly been launched. One of the most dramatic, in 1983, was when Stanislav Petrov—the duty officer in a Soviet nuclear war early-warning centre—found his system warning of the launch of five US missiles. After a few moments of agonising, he judged it—correctly—to be a false alarm. However, if he had reached a different conclusion and passed the information up the control chain, it could have triggered the firing of nuclear missiles by Russia.

People say that we cannot uninvent things that have been invented, but biological weapons were banned in 1972, chemical weapons in 1993, landmines in 1997 and cluster munitions in 2008. If the political will is there, it can be done.

Julian Lewis Portrait Dr Julian Lewis
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Will the hon. Lady give way?

Caroline Lucas Portrait Caroline Lucas
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No.

Right now, around 130 countries have endorsed a UN motion calling for a global ban treaty on nuclear weapons. Negotiations for that global ban treaty may begin next year, but this Government are holding out and refusing to engage with multilateral UN processes to secure a nuclear-free world. The Government therefore have no credibility when they say they are seriously working for a nuclear-free world. In an increasingly interconnected world, where our security is deeply linked to the security of those around us, and where we need to be gradually doing the slow and hard work of disarming, the Government’s response is the wrong one, and it takes us backwards. By voting to renew Trident, we are sending a signal that power by any means is necessary—