5 super-secret Cold War programs you didn't know about

In April 1950, the CIA approved Operation Bluebird, a program focused on behaviour control and the extraction of information from prisoners and defectors, as well as suspected double agents who were under investigation.

Led under the direction of Roscoe H. Hillenkoetter, Bluebird tested whether techniques such as hypnosis and forced isolation, along with chemical dosing, could weaken resistance or implant suggestions.

Officials increasingly feared that communist intelligence agencies had already developed psychological control methods, and they believed the United States would fall behind if it failed to pursue the same research.

To conduct these experiments, CIA doctors often used a range of substances such as barbiturates, LSD, and scopolamine, sometimes on subjects who had not consented.

Tests were frequently carried out in psychiatric hospitals and military prisons, as well as in overseas detention facilities, where oversight was often minimal.

Early findings suggested that drugs could, in some cases, accelerate confusion, fatigue, or suggestibility, although researchers also noted dangerous side effects and unpredictable outcomes.

Over time, the program covered a wider range of activities. By 1951, it had been renamed Project Artichoke and had come to include new areas of research that dealt with memory erasure and induced amnesia.

It also examined the possibility that individuals could be programmed to perform acts under post-hypnotic suggestion.

At one point, files described efforts to create a “triggered assassin” whose memory of the act would remain buried.

While the program lacked careful scientific standards, it attracted increased CIA support and laid the foundation for Project MKUltra, which formally began in 1953 and expanded behavioural research on a much larger scale.

Records from Bluebird had stayed classified until the 1970s, when public anger over CIA abuses forced congressional investigations and limited public information about its methods.

By the late 1950s, American defence planners had become increasingly concerned that Soviet forces could cut undersea cables or disrupt global communications during a nuclear crisis.

To prevent isolation, engineers at MIT’s Lincoln Laboratory proposed an artificial space-based communication network that used copper dipole antennas.

Known as Project West Ford, the plan involved the launch of millions of small copper wires into Earth orbit to reflect radio signals back to the surface. 

In May 1961, the U.S. Air Force launched a satellite packed with 480 million copper needles, which were each about 1.8 centimetres long.

The Thor-Agena rocket carried the payload into space. Once deployed, the needles began to spread into a narrow ring around the Earth at roughly 3,700 kilometres above sea level.

If successful, this system would allow transcontinental radio communication to continue even if Soviet attacks disabled satellites or cable infrastructure.

Soon after the deployment, engineers tested radio bounce-back transmissions and reported limited success.

However, many astronomers quickly criticised the project. They warned that the copper ring interfered with radio astronomy and risked polluting Earth’s orbital environment.

Environmental concerns were still developing as a political force in the early 1960s and added pressure to abandon further launches.

As a result, West Ford was not repeated, though its debris stayed in orbit for years, and the last needles fell back into the atmosphere and burned up by the late 1980s.

The project demonstrated how Cold War anxieties reached into space and how military planners sometimes clashed with scientific communities when designing emergency communication systems.

During the early 1980s, Soviet leadership increasingly feared that the United States might initiate a surprise first strike that would destroy their chain of command.

As a protection, they authorised the construction of an automated nuclear control system known as Perimeter, later nicknamed "Dead Hand" by Western analysts.

Its purpose was to ensure that a strike in response would launch even if Moscow’s leadership had already been killed. 

To carry out this task, engineers created a network of sensors capable of detecting signs of a nuclear explosion, such as shockwaves, sudden radiation spikes, or disrupted communication signals.

If the system detected those signs and failed to receive any official instructions from Soviet command, it would trigger an emergency procedure.

Under that protocol, a command missile would launch from an underground bunker and fly across Soviet territory, transmitting launch codes to remaining missile silos and mobile units.

During testing, Perimeter required manual activation by military officials during heightened alert.

Once activated, it entered a standby mode and monitored for signs of a massive attack.

Marshal Sergey Akhromeyev reportedly supported its development, though claims about General Varfolomeev’s role are less clearly documented in declassified sources.

American intelligence officials learned of Dead Hand’s existence only after the Soviet Union collapsed. 

After 1991, former Soviet generals confirmed that the system had entered active service and had continued to operate during moments of extreme tension.

Even though Soviet leaders claimed that human judgment could override the system, it never operated in a fully independent manner.

Its design showed a way of thinking about strategy that prioritised guaranteed retaliation over any pause for diplomacy.

Dead Hand’s development showed how Cold War policy increasingly relied on machines to deliver decisions that could destroy the world when human leadership might no longer exist.

In March 1968, Soviet submarine K-129 was a Golf II-class ballistic missile submarine and sank to the bottom of the Pacific Ocean.

It took its nuclear missiles and cryptographic materials with it, along with the entire crew.

American intelligence analysts tracked the location and quickly assessed the potential value of recovering the wreck.

If they could reach the debris field, located over 5,000 metres below the surface, they might gain access to codebooks and warhead components, as well as signal encryption systems.

The result was one of the largest intelligence operations of the Cold War: Project Azorian. 

To conduct the recovery without attracting Soviet attention, the CIA enlisted the help of billionaire Howard Hughes, whose name provided a believable cover story for constructing a large deep-sea mining vessel.

The Hughes Glomar Explorer was publicly described as a ship built to retrieve manganese nodules and secretly housed a very large mechanical claw named Clementine that could descend to the ocean floor and grip the broken hull of the sunken submarine.

After months of preparation, the Glomar Explorer reached the site in mid-1974 and began the lift.

However, as the wreck reached mid-ascent, the mechanical claw reportedly failed, and this failure caused part of the submarine to break off and fall back into the deep ocean.

Reports vary on what was recovered. Some claim that nuclear weapons and classified electronics were recovered, while others suggest only a section containing crew remains reached the surface.

The operation cost an estimated $800 million, a figure that likely understated the full expense. 

To prevent further questions, CIA officials adopted a new policy when journalists submitted Freedom of Information requests.

In 1975, the agency replied that it could “neither confirm nor deny” the existence of the mission.

This became known as the “Glomar response.” The full story of Project Azorian is still partially classified.

After the collapse of Nazi Germany in 1945, American intelligence teams began capturing scientific sites and interrogating German researchers.

Among those detained were rocket engineers and chemical weapons developers, along with aviation specialists who had worked under the Nazi regime.

While many had close ties to the SS or had overseen forced labour, U.S. officials often prioritised technological advantage over legal accountability.

Operation Paperclip was created to secretly recruit and relocate these scientists to the United States. 

During the program's early years, more than 1,600 individuals entered the U.S. under its authority, among them Wernher von Braun, who had developed the V-2 rocket and later led NASA’s Apollo program.

Von Braun had worked at the Mittelwerk facility and used slave labour from the Dora-Mittelbau concentration camp.

Others included chemists who had developed nerve agents such as sarin, aviation engineers who tested supersonic flight, and doctors who had conducted medical experiments under the Nazi regime.

Their skills and knowledge proved valuable for Cold War research in rocketry, space exploration, and chemical warfare.

To get around postwar restrictions on employing war criminals, U.S. agencies forged documents, removed references to Nazi connections, and revised service records.

Security clearances were, in many cases, granted to individuals who would otherwise have been barred under Allied denazification agreements.

As a result, many of these scientists eventually received comfortable jobs and citizenship, along with public recognition, while their victims continued to be ignored.

Later recruitment efforts went further than the original Paperclip plan and continued under programs such as Project 63. 

By the 1970s, investigative journalists and congressional committees had uncovered details about Operation Paperclip, and this discovery led to debates over its moral questions.

The program raised difficult questions about whether military advantage justified working with individuals who had participated in a genocidal regime.

During the Cold War, however, American officials believed that allowing the Soviets to claim this expertise posed a greater danger than the moral cost of silence.