FBI Report: Trotsky was assassinated by the MI6
Before his assassination, Trotsky was on the verge of an arrest by the pro-communist elements of the Mexican counter-intelligence, causing a massive intelligence leak on Trotskyite networks. To save Trotskyism, the British intelligence service decided that Trotsky should take this information with him to the grave, rather than allow this information to fall in the hands of the Empire's foes.
The History of the USSR & the Peoples’ Democracies
Chapter 9, Section 4 (C9S4)
Saed Teymuri

The previous article, exploring Trotsky’s agreement to inform the American imperialist secret service about communist activities in Latin America, also explained the process of the fake ‘terror’ operation which Trotsky masterminded against himself, as a way to present himself a ‘victim’ of ‘Stalinism’, to strengthen the Trotskyite cause, to undermine the Soviet-backed Communist Party in Mexico, a key pillar of the Lazaro Cardenas administration’s anti-imperialist faction.
When Trotsky launched the fake ‘terror’ operation against himself, Mexico’s counter-intelligence service arrived at the conclusion that the attack was indeed launched by Trotsky himself as a way to promote his cause. As such, the pro-communist forces in the Mexican counter-intelligence service arrested Trotsky’s agents and were tightening the spy ‘net’ around Trotsky – they were on the verge of arresting Trotsky himself. Trotsky wrote of the arrests:
Why were these two members of the guard arrested and not the others? Because Otto and Charles served as liaison agents with the authorities and with our few friends in the city. Preparing the blow against me, the investigating magistrates decided first of all to isolate our house completely. On the same day a Mexican, S., and a Czech, B., our young friends who had visited us to express their sympathy, were placed under arrest. The aim of the arrests was obviously the same: to cut off our connections with the outside world. The arrested members of the guard were confronted with a demand that they confess in “a quarter of an hour” that it was I who had ordered them to carry out the “self-assault.” I am not at all inclined to exaggerate the importance of these episodes or to invest them with a tragic meaning. They interest me solely from the standpoint of the possibility of exposing those behind-the-scenes forces that were able in the course of 24 hours to bring about an almost magical turn in the direction of the investigation. These forces continue even today to exert an influence on the course of the investigation.
On Thursday May 30 when B. was questioned in Via Madera, all the police agents proceeded from the theory of self-assault….
(Stalin Seeks My Death, Leon Trotsky, Written: 24 May, 1940, First Published: The Fourth International, Vol. 2 No. 7, August 1941, pp. 201-207, Translated: By The Fourth International, Marxists Internet Archive. Bold added)
As Trotsky stated, his agents were being arrested to be interrogated against Trotsky himself. As he said, Trotsky was losing his connections with the outside world, meaning that the Mexican counter-intelligence was placing security restrictions around him to the point of his de facto house arrest. The following article proceeds based on the information provided in depth in the previous article.
Trotsky’s fake ‘assassination’ plot against himself was being further exposed, thereby allowing elements in Mexican intelligence to encircle Trotsky.
Shortly prior to his death Trotsky also confessed that his son and many others of his family members were assassinated by the Gestapo. In an article that Trotsky wrote shortly prior to his death, Trotsky admitted:
In the last few years, the Gestapo in the U.S.S.R has killed hundreds of my friends, including members of my family. In Spain, the Gestapo killed my ex-secretary, Ervin Wolff, and many members of my party; in Paris they killed my son, Lew Sedow…. (‘The Gestapo, Organizer of the Assault’, Leon Trotsky, 1940, p. 2) (IMG)
A look at Trotsky's writings on intelligence matters will demonstrate to the reader that Trotsky frequently accused the Stalin faction of the Soviet secret service of "supporting" the White Guards and the Gestapo. This provides context to Trotsky's attempt to link the Gestapo's assassination plots to Stalin. Trotsky’s confession that the Gestapo was responsible for the murder of Leon Sedov (Lew Sedow) was part of his more general project at ‘proving’ the alleged parallels and alleged operational relationship between the Soviets and the Nazis. One of his articles is titled “The Inseparable Connection between the Komintern and the Gestapo,” as an FBI document showed. Trotsky’s revelation against the Nazi German secret service would have surely been damaging to the Gestapo. Such a revelation would have undermined the MI6 as well. At the time, the British Empire still regarded the Nazi Reich favorably as a bulwark against Soviet power. Trotsky did not get the chance to live long enough to publish such an article. Indeed, just before he could publish his article exposing the Gestapo role, he was assassinated by the MI6. There is an FBI document that sheds light on this matter. An FBI document referred to an:
informant [who] was interviewed by Spcial Agent E. F. McNAMARA of this office. (Subject: ‘BOMBING OF BRITISH PAVILION, NEW YORK WORLD’S FAIR, July 4, 1940. EXPLOSIVES.’, To: Director of the Federal Bureau of Investigaation, Washington, D. C. Written by: B. E. SACKETT (Special Agent in Charge), New York, September 16, 1940, p. 3) (IMG)
The FBI informant referred to by the document:
stated at this time that he was assured from a confidential source that the agents of the British Intelligence Service had been responsible for the death of the late LEON TROTZKY…. (Subject: ‘BOMBING OF BRITISH PAVILION, NEW YORK WORLD’S FAIR, July 4, 1940. EXPLOSIVES.’, To: Director of the Federal Bureau of Investigation, Washington, D. C. Written by: B. E. SACKETT (Special Agent in Charge), New York, September 16, 1940, p. 2) (IMG)
The FBI document detailing the report of the FBI informant continued:
the British Intelligence Service were … eliminating a dangerous rival [of Stalin] in the person the late LEON TROTZKY. (Subject: ‘BOMBING OF BRITISH PAVILION, NEW YORK WORLD’S FAIR, July 4, 1940. EXPLOSIVES.’, To: Director of the Federal Bureau of Investigaation, Washington, D. C. Written by: B. E. SACKETT (Special Agent in Charge), New York, September 16, 1940, p. 3) (IMG)
Trotsky’s confession against German intelligence bosses was not the sole reason why his death was useful to the imperialist-fascist secret services. The arrest of Trotsky by the Cardenas Administration could lead to the extradition of Trotsky to the USSR and the exposing of the dirty hands of the Trotskyite spies of the Anglo-American-German secret services in the USSR and Latin America. Having arrested Trotsky's henchmen, and having prevented Trotsky’s contacts with the rest of the world, the Mexican counter-intelligence was on the verge of arresting, and interrogating, Trotsky himself. Before such an arrest and potential extradition to the USSR, before the dirty hands of Anglo-American-German intelligence services could be exposed, Trotsky was eliminated so that the secrets he kept would go with him down to the grave.
See also: Leon Trotsky was an MI6 agent since 1918, American intelligence documents reveal
The public trials against Trotskyite conspirators in the USSR and the Mexican government’s investigation against Trotsky’s self-assault were further and further challenging Trotsky and Trotskyism. At a time when Trotskyism was decaying and being further and further exposed, only the ‘martyrdom’ of Trotsky and his family members could bolster Trotskyism, while ensuring that the secrets known by Trotsky would be buried with him. Through spilling the blood of Trotsky and his family members, the imperialist-fascist secret services saved Trotskyism. At the same time, the assassination of Trotsky was useful in associating the Comintern and the Soviets with global terrorist networks, a network that was in reality sponsored by the Anglo-Americans and the Axis, not the Soviets. Trotsky himself admitted that the PCM was not responsible at least for the first terror attack:
In its official declarations the Communist Party reiterates that individual terror does not enter into its system of actions, etc. No one supposes that the assault was organized by the Communist Party. The GPU makes use of the Communist Party but is not at all merged with the Communist Party. (Stalin Seeks My Death, Leon Trotsky, Written: 24 May, 1940, First Published: The Fourth International, Vol. 2 No. 7, August 1941, pp. 201-207, Translated: By The Fourth International, Marxists Internet Archive) (IMG)
However, the second terror attack, which did murder Trotsky inevitably caused the PCM to be regarded as terrorist-linked. Through the assassination, the MI6 embarrassed the PCM, the pillar of the progressive elements in the Mexican government. Cardenas himself was ousted three months after Trotsky’s death. A Soviet-friendly (even if not necessarily PCM-dominated or socialist) government to the south of the United States would have helped the USSR to blackmail American imperialists into contributing more to the oncoming Great Patriotic War against the Axis forces in Europe. Later on, during the Cold War, it could have helped undermine US interests in Latin America and undermine the US regime from the south. American imperialists certainly did not like being blackmailed into fighting Nazism.
To annihilate the cadres of a hostile organization at once, either through a direct military conflict or through a shadow war, is to produce a quantitative leap that yields a qualitative change in the character of the targeted organization and renders the targeted organization incapable of a powerful response. To engage in the adventure of assassinating only one enemy leader, while this enemy leader could have been arrested and interrogated, is to make a martyr out of that hostile leader, to raise the vigilance of his followers, and to thereby provoke a mighty backlash in his/her favour. Such is why the assassination of Leon Trotsky was itself a Trotskyite adventure, and little surprise lies in the fact that the terror operation was committed by one of the MI6 agent Trotsky’s own henchmen, Ramon Mercader, at the behest of the MI6.
Pavel Sudoplatov reportedly ‘admitted’ in his memoirs that Trotsky was assassinated by Soviet intelligence. Sudoplatov was a Beria agent, who in turn was an MI6 agent. Amy Knight, a scholar from the CIA’s Wilson Center, admitted:
While the Fourth Administration consisted mainly of Beria loyalists such as Sudoplatov, NKVD officials in the republican and regional partisan groups often came from the border guards, which had a history of friction with the political police. (Beria: Stalin’s First Lieutenant, Amy Knight, p. 122) (IMG)
Among the Beria supporters who remained in leading MGB posts throughout this period were … Pavel Sudoplatov…. (Beria: Stalin’s First Lieutenant, Amy Knight, p. 167) (IMG)
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