What You’ll Learn in This Episode
- Why Leon Trotsky ended up in exile in Mexico City after being expelled from the Soviet Union
- How Stalin orchestrated a global campaign to hunt down and discredit his former rival
- What the Dewey Commission concluded about Trotsky’s guilt or innocence in the Moscow show trials
- How Trotsky’s assassination in 1940 was planned and executed by Soviet intelligence
From Revolutionary to Exile
Leon Trotsky was once the second most powerful man in revolutionary Russia — founder of the Red Army, architect of the Bolshevik military victory in the civil war, and the man many expected to succeed Lenin. His fall was correspondingly dramatic. Outmanoeuvred in the inner-party struggles of the 1920s by Joseph Stalin, Trotsky was expelled from the Communist Party in 1927, exiled from the Soviet Union in 1929, and stripped of Soviet citizenship in 1932. He spent the rest of his life moving between countries — Turkey, France, Norway — as Soviet pressure on each host government eventually made his position untenable.
Mexico was the last stop. In January 1937, Trotsky and his wife Natalia Sedova arrived in Tampico, welcomed by the muralist Diego Rivera and his wife Frida Kahlo, who offered them accommodation in the Blue House in Coyoacán. The Mexican government of President Lázaro Cárdenas had agreed to grant Trotsky asylum — a decision that made Mexico an unlikely sanctuary for the man Stalin most wanted dead.
The Hunt
Stalin’s campaign against Trotsky was relentless and personal. The Moscow show trials of 1936–38 placed Trotsky at the centre of an imaginary conspiracy — the “Trotskyite-Zinovievite terrorist bloc” — that was supposedly responsible for sabotage, assassination and collaboration with fascist powers. Former comrades who had known Trotsky for decades were tortured into confessing their participation in plots that had never occurred. When the American philosopher John Dewey organised an independent commission of enquiry in Mexico in 1937, the commission found Trotsky entirely innocent of the charges against him — a verdict that was simply ignored by those who had already decided his guilt.
The NKVD — Stalin’s secret police — ran multiple operations against Trotsky in Mexico. In May 1940, a paramilitary assault on the Blue House led by the muralist David Alfaro Siqueiros failed to kill him. Trotsky survived by lying flat under his bed while gunmen fired hundreds of rounds into his bedroom. His grandson Sieva was wounded in the foot.
The Assassination
The second attempt succeeded. On 20 August 1940, a Spanish NKVD agent named Ramón Mercader — who had spent months cultivating a friendship with Trotsky under a false identity — entered his study and drove an ice pick into the back of his skull. Trotsky died the following day. He was sixty years old. Mercader served twenty years in a Mexican prison and was subsequently awarded the Order of Lenin by the Soviet state.
Trotsky spent his final years in extraordinary intellectual productivity. Besieged by assassins, cut off from most of his family — his sons were killed on Stalin’s orders, his daughter died of illness — he continued to write political analysis, biography and autobiography. His unfinished biography of Stalin was on his desk when he was attacked.
Why It Matters Now
Trotsky’s fate illustrates the extreme logic of Stalinist totalitarianism: the regime could not tolerate the existence of a credible alternative voice, even one living in exile thousands of miles away. His assassination was not merely the elimination of a political rival but a demonstration that no one who had crossed Stalin was safe anywhere in the world. The use of state intelligence services to murder critics and dissidents abroad — a practice that has recurred in the twenty-first century — has its most systematic precedent in the NKVD’s global operations against Trotsky and his supporters.
Key Figures
- Leon Trotsky — Co-leader of the Bolshevik Revolution, founder of the Red Army, and Stalin’s most famous victim. Murdered in Coyoacán, Mexico, August 1940.
- Ramón Mercader — Spanish NKVD agent who assassinated Trotsky. Operated under the alias “Frank Jacson”. Awarded the Hero of the Soviet Union after his release from prison.
- Diego Rivera — Mexican muralist who offered Trotsky asylum in his home. His relationship with Trotsky later broke down over political disagreements.
- John Dewey — American philosopher who chaired the independent commission in 1937 that found Trotsky innocent of the charges in the Moscow show trials.
- David Alfaro Siqueiros — Mexican muralist and Stalinist who led the failed paramilitary assault on the Blue House in May 1940.
Timeline
1927 — Trotsky expelled from the Communist Party of the Soviet Union
1929 — Exiled from the USSR; settles initially in Turkey
1936 — First Moscow show trial; Trotsky named as the centre of a fabricated terrorist conspiracy
January 1937 — Arrives in Mexico; stays at the Blue House in Coyoacán with Diego Rivera
April–May 1937 — Dewey Commission hearings in Mexico; Trotsky found innocent
May 1940 — Failed assassination attempt led by David Alfaro Siqueiros
20 August 1940 — Ramón Mercader attacks Trotsky with an ice pick; Trotsky dies the following day
Listen to more: Best Podcasts on Stalin and the Soviet Union | Best Podcasts on the Russian Revolution
