Files reveal Trident strike needed 'to kill 10m Russians'

The British government opted for the Trident nuclear weapons system because it estimated it could kill up to 10-million Russians and inflict “unacceptable damage” on the former Soviet Union, according to secret Whitehall documents written in the 1970s.

The macabre calculations that underpinned the decision in 1980 to replace Polaris nuclear missiles with Trident have been revealed by a Ministry of Defence memo, marked “personal and top secret”. In a nuclear war, Britain would have had to be prepared “to finish what we start”, it said.

Other MoD documents set out in chilling detail exactly how an attack on Moscow and St Petersburg could cause enough death and destruction “to bring about the breakdown of the city as a functioning community”.

The late 1970s and early 1980s saw an escalation of international tensions in the cold war between the Soviet bloc and the West. In 1979, Soviet troops invaded Afghanistan, prompting a US trade embargo and a mass boycott of the Moscow Olympics in 1980.

At the same time, the West’s political direction swung to the right, with the election of Margaret Thatcher as prime minister in 1979, and Ronald Reagan as US president in 1981.
Reagan famously described the Soviet Union as an “evil empire” and predicted communism would be consigned to the “ash heap of history”.

The secret memo was written on December 18 1978 by the late Michael Quinlan, a senior nuclear expert in the civil service who went on to become MoD permanent secretary. He was responding to an internal paper by Labour’s then foreign secretary, David Owen, who argued that Britain’s nuclear options could be scaled back.

They disagreed over precisely how many Soviet citizens the UK needed to threaten to kill in order to deter an attack by the USSR. Owen’s suggestion was that “a million Soviet dead would be ‘more than adequate’,” according to Quinlan.

But, argued Quinlan, an effective deterrent required “options an order of magnitude higher than this” of up to 10-million dead. The Soviet Union’s “threshold of horror” was different from the UK’s because it had lost more than 20-million people in World War II.

“In this field nothing is provable, but it is far from clear that they would regard less than half of 1% of their population as an unthinkable price for contemplating a conquest of western Europe,” Quinlan wrote.

‘To finish what we start’
“Still more to the point, it is far from clear that they would rate highly the probability that a country would choose incineration rather than subjugation in order to inflict a strike of such relatively modest proportions.”

The nuclear deterrent was founded on the UK’s ability “to run the whole course right up to unacceptable strategic damage—to finish what we start,” Quinlan said. Owen’s arguments were “unexceptional” and “superficial”.

Another “top secret” document attempted to define the level of “generalised destruction” the UK would be prepared to wreak on Russian cities such as Moscow and St Petersburg. It was prepared by officials in 1978 for the MoD’s chief scientific adviser, Professor Sir Ronald Mason.

The breakdown of the city as a functioning community could be accomplished by inflicting “severe structural damage” on buildings across 40% of a city, the document argued. If the bombs were detonated in the air, this would be likely to kill at least 40% of the inhabitants instantly. But the document pointed out that up to 30% of city populations could be evacuated to a network of underground bunkers. These would protect people against bombs exploded in the air, it argued, but not against those detonated at ground level.

“Ground-bursts would subject 55-60% of the city to a radiation dose sufficient to cause rapid debilitation followed by death for most people in the area, and to contaminate food, water, air and both damaged and undamaged buildings,” the document stated.

The government would hence have to retain the option of ground-bursts so that Soviet civil defence measures could be rendered ineffective, officials concluded.

The documents were found in the National Archives in London by Brian Burnell, a former nuclear weapons design engineer who now researches atomic history. Some of them were being studied earlier this year by the Cabinet Office, which is writing an official history of Chevaline, a secret upgrade to Polaris in the 1970s.

Though the Labour government was considering how to replace the Polaris submarine-launched ballistic missiles, it was voted out of office in 1979 before any decision was taken. The MoD’s plan for Trident was then given the go-ahead by the Thatcher in 1980.

Lord Owen, now a cross-bencher in the House of Lords, left the Labour party, partly because of its anti-nuclear policy, and helped found the Social Democratic party in 1981. Speaking to the Guardian last week, he stood by his views and dismissed Quinlan’s arguments, alleging that Quinlan was part of an MoD elite that had repeatedly hidden information from ministers about Britain’s nuclear weapons.

Owen said that the level of “necessary damage” that the UK would now have to inflict on potential aggressors had progressively diminished over the last 32 years. “We should take the damage level capacity down in the future design and deployment of our nuclear weapons,” he said.

John Ainslie, the coordinator of the Scottish Campaign for Nuclear Disarmament, pointed out that the 120 nuclear warheads that the current government wanted to remain operational were enough to kill several million people.

“These documents give a glimpse into the world of Dr Strangelove, where mathematicians calculate precisely how many people Britain must be able to incinerate in a nuclear war,” he said.

The MoD declined to comment on the grounds that the documents were “historical”. -

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