Espionage is an enduring motif of the Cold War. This period is replete with stories of spies, agents and assassins, operating undercover and living double lives to infiltrate enemy governments or societies. While the extent of Cold War espionage is often exaggerated, both the United States and Soviet Union certainly spent heavily on recruiting, training and deploying spies and agents. The main purpose of Cold War espionage was to gather information and intelligence about the enemy, particularly their military and technical capabilities. This information was harvested from a range of sources, including paid informers, double-agents, stolen documents, intercepted communications, ‘bugs’ (listening devices) or other means of surveillance. Agents also carried out disruptive missions, such as carrying out sabotage operations and kidnapping or assassinating enemy agents or politicians. Cold War spies were rarely flamboyant James Bond types portrayed in literature and film. The success of their missions – and indeed their survival – usually hinged on looking and behaving like ordinary members of society.
All major Cold War powers maintained at least one government agency dedicated to intelligence-gathering and espionage. In the United States, this task fell to the Central Intelligence Agency (CIA). The CIA began as the Office of Strategic Services (OSS), a military branch that conducted espionage and undercover operations during World War II. In 1947 the OSS was reorganised and rebranded as the CIA. The CIA’s structure, mission and methods were shaped by the Cold War. One early directive (1948) authorised the CIA to conduct secret operations “against hostile foreign states or groups or in support of friendly foreign states or groups” so that “US government responsibility for them is not evident to unauthorised persons”. The CIA was also supported by other US government agencies. Formed in 1952, the National Security Agency (NSA) gathered information by monitoring, intercepting and decoding signals and radio traffic. The Federal Bureau of Investigations (FBI, formed 1908) was responsible for investigating domestic criminal activity, which included espionage, sedition and other treasonable activities.
The CIA’s Cold War activities ranged from general surveillance of suspected foreign agents, to deploying its own agents abroad, to illicit operations like assassinations and human experimentation. The CIA also complemented US foreign policy by supporting, funding and equipping anti-communist leaders and groups abroad. One of the CIA’s first major missions, for example, was to assist non-communist political parties in Italy in 1948. Several Cold War coups and attempted coups, such as the 1973 overthrow of Salvador Allende in Chile, were conducted with the backing or active involvement of the CIA. In 1959-61, CIA agents recruited and trained 1,500 Cuban exiles. In April 1961 these Cubans landed the island-state with plans to overthrow Fidel Castro, an incident dubbed the Bay of Pigs Invasion. CIA pilots flew U-2 flights over Soviet and Cuban territory, collecting data about military facilities, armaments and troop movements. The CIA also plotted assassination attempts on foreign leaders, such as Castro. In 1974 the CIA spent more than $US800 million on Project Azorian, a mission to recover codebooks and nuclear technology from a sunken Soviet sub, laying under 16,000 feet of water in the Pacific Ocean.
Sometimes operating jointly with the Department of Defence, the CIA also carried out research into nuclear, chemical and biological weapons and the effects they had on humans. They also researched effective interrogation techniques and mind control strategies. One of these research programs was Project MK-ULTRA, which ran from 1953 to the late 1960s and soaked up more than $US10 million in funding. MK-ULTRA was chiefly concerned with the effects of hypnosis and mind-altering drugs, with a view to using them for Cold War purposes. Many questions have been raised about MK-ULTRA and the unethical nature of its research. Hundreds of Americans, mostly military personnel, were subjected to drug trials and experimentation without their informed consent. MK-ULTRA experiments are believed to have contributed to several deaths, including Harold Blauer and Frank Olson, who died in 1953 after being injected with hallucinogenic drugs. Other secret programs conducted by the CIA included Operation Mockingbird (aimed at facilitating sympathetic media coverage), Project Resistance (information-gathering about radical student groups) and Operation Chaos (the disruption of American left-wing and anti-war groups). One CIA project, Stargate, even investigated psychic abilities and their possible use in intelligence applications.
United States law prohibited the CIA from carrying out domestic operations (a restriction that was often breached during the Cold War). Within US borders, the investigation and prosecution of suspected spies was the responsibility of the FBI. Between 1935 and 1972 the FBI was headed by J. Edgar Hoover, a fanatical anti-communist and a ruthless political operator. The FBI began investigating Soviet espionage in 1943 after receiving an anonymous letter. Within two years, the FBI had more than doubled in size, numbering around 13,000 agents. In late 1945 the FBI was provided with extensive information about Soviet espionage by Elizabeth Bentley, who herself had been passing information to Moscow. Bentley provided the FBI with a 112-page confession, naming 80 people as paid informers or agents working for Moscow. Bentley’s defection, along with accusations against State Department lawyer Alger Hiss, fuelled anti-communist hysteria in America during the late 1940s and early 1950s. In 1956 Hoover authorised COINTELPRO (short for Counter-Intelligence Program), a prolonged campaign targeting domestic political organisations. For 15 years, FBI agents infiltrated a range of organisations including left-wing political parties, unions, civil rights groups, radical student associations, the anti-war movement, regional militias and race-hate groups such as the Ku Klux Klan. These agents fed information back to the FBI – and occasionally took action to disrupt these groups from within.
The Soviet Union had a much longer history of espionage and intelligence-gathering. Russian secret police organisations dated back to the Okhrana in the late 1800s, the communist CHEKA (1917-22), the OGPU (1922-34) and Stalin’s NKVD (1934-54). All used covert methods to gather information about political dissidents and potential ‘enemies of the state’. After the death of Joseph Stalin in 1953, the NKVD was replaced by the KGB (Komitet Gosudarstvennoy Bezopasnosti, or ‘Committee for National Security’). The KGB assumed responsibility for both domestic security and foreign intelligence. Another department called Glavnoye Razvedyvatel’noye Upravleniye (GRU) gathered intelligence for the Soviet military. Decades of experience in espionage, along with existing agents and contacts in Western countries, gave the Soviet Union a distinct ‘head start’ in this area. The Soviets began mobilising agents and recruiting informers in Western countries during the 1930s. During World War II, Moscow prioritised the infiltration of the Manhattan Project, America’s nuclear weapons research program. Soviet agents were able to obtain and pass on technical information about this program, including blueprints, with remarkable ease. By the time the US dropped its first atomic bomb on Japan in August 1945, Stalin knew more about this devastating new weapon than most American politicians.
John Earl Haynes, historian
The passing of American nuclear secrets led to probably the best-known spy case of the Cold War. As mentioned above, FBI investigations in the late 1940s uncovered a chain of Soviet spies and paid informers operating inside America’s borders. By 1950 the FBI was investigating Julius Rosenberg, a civilian engineer previously employed by the US Army. Rosenberg, who had ties with an American communist group, was arrested in 1950 and accused of passing information to a Russian agent. When he refused to confess or provide investigators with more names, the FBI began targeting his wife Ethel. Both were eventually charged under the Espionage Act. Put on trial, they denied the charges and refused to testify or name associates. In April 1951 the Rosenbergs were found guilty and sentenced to death in the electric chair. This verdict caused outrage and disbelief both in America and internationally. Many thought the Rosenbergs were innocent; others believed they were nothing more than go-betweens and therefore undeserving of the death penalty. Julius and Ethel Rosenberg were electrocuted in New York in June 1953. They were the only Americans executed for espionage during the Cold War.
The United States was not the only Cold War nation to suffer infiltration by Soviet agents. Britain was also subject to Soviet espionage, most notably by the Cambridge Five spy ring. In 1963 British journalist Kim Philby disappeared from Lebanon. Until his resignation in 1951, Philby had been a high-ranking member of Britain’s Secret Intelligence Service (or MI6). In reality, Philby was a double-agent and had been passing information to Moscow since the mid-1930s. Philby and two of his fellow agents, Donald Maclean and Guy Burgess, defected to the USSR and lived there until their deaths. The British government was further damaged in 1963 when it was revealed that Donald Profumo, a member of the Cabinet, was sharing a mistress with a known Soviet spy. In 1954 Vladimir Petrov, a Soviet diplomat and KGB colonel, defected to Australia. Petrov provided the government there with information about Soviet spies operating in Australia. The Petrov affair led to the USSR and Australia severing diplomatic ties for five years.
1. Espionage is the process of gathering intelligence and information about a rival or enemy, usually through secret operations. It was a significant feature of the Cold War.
2. All major Cold War powers had agencies that engaged in espionage. These agencies collected intel, assisted anti-communists, targeted enemies and researched new weapons and techniques.
3. The CIA, an American agency formed in 1947, was tasked with intelligence-gathering and, later, carrying out covert operations. It was supported by agencies like the NSA and FBI.
4. The Soviets had a much longer history of espionage in Western nations, dating back to before World War II. They recruited and used agents to obtain American nuclear secrets.
5. Espionage and spies became an enduring motif of the Cold War. There were many incidents and accusations involving espionage, including the execution of the Rosenbergs, the capture Gary Powers and his U2 spyplane and the Petrov affair in Australia.
This page was written by Jennifer Llewellyn, Jim Southey and Steve Thompson. To reference this page, use the following citation:
J. Llewellyn et al, “Cold War espionage”, Alpha History, accessed [today’s date], https://alphahistory.com/coldwar/espionage/.