Jaime Ramón Mercader del Río (7 February 1913 – 18 October 1978), more commonly known as Ramón Mercader, was a Spanish communist and NKVD agent who assassinated the Russian Bolshevik revolutionary Leon Trotsky in Mexico City in August 1940. He served 20 years in Mexican prison for the murder. Joseph Stalin presented him with an Order of Lenin in absentia. Mercader was awarded the title of Hero of the Soviet Union after his release in 1961.
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