Kirov's assassination became a major event in the history of the Soviet Union because it was used by Stalin as an excuse to justify his reign of terror known as the Great Purge. At the time of Kirov’s murder, Maxim Litvinov, the Soviet Foreign Minister, was out of the country; his daughter Tanya implied that Litvinov realised this event might be an excuse for Stalin to unleash a reign of terror. This view was confirmed by Anastas Mikoyan’s son, who stated that the murder of Kirov had certain similarities to the burning of the Reichstag in Nazi Germany in 1933. Although it is not known whether the fire at the Reichstag was organised by the Nazis, it was used as a pretext for the mass persecution of the Communists and Social Democrats in Germany. The physical removal of Kirov meant elimination of a future potential rival for Stalin, but the principal objective, as with the fire at the Reichstag, was to manufacture an excuse for repression and control.