Béla Kun
Béla Kun (, born Béla Kohn; 20 February 1886 – 29 August 1938) was a Hungarian communist revolutionary and politician who governed the Hungarian Soviet Republic in 1919. After attending Franz Joseph University at Kolozsvár (today Cluj-Napoca, Romania), Kun worked as a journalist up until the First World War. He served in the Austro-Hungarian Army and was captured by the Imperial Russian Army in 1916, after which he was sent to a prisoner-of-war camp in the Urals. Kun embraced communist ideas during his time in Russia, and in 1918 he co-founded a Hungarian arm of the Russian Communist Party in Moscow. He befriended Vladimir Lenin and fought for the Bolsheviks in the Russian Civil War.In November 1918, Kun returned to Hungary with Soviet support and set up the Party of Communists in Hungary. Adopting Lenin's tactics, he agitated against the government of Mihály Károlyi and achieved great popularity despite being imprisoned. After his release in March 1919, Kun led a successful coup d'état, formed a Communist-Social Democratic coalition government and proclaimed the Hungarian Soviet Republic. Though the ''de jure'' leader of the republic was prime minister Sándor Garbai, the ''de facto'' power was in the hands of foreign minister Kun, who maintained direct contact with Lenin via radiotelegraph and received direct orders and advice from the Kremlin.
The new regime collapsed four months later in the face of Romanian advance. Kun fled to Soviet Russia, where he worked as a functionary in the Communist International bureaucracy as the head of the Crimean Revolutionary Committee from 1920. He organised and actively participated in the Red Terror in Crimea (1920–1921), following which he participated in the 1921 March Action, a failed Communist uprising in Germany.
During the Great Purge of the late 1930s, Kun was accused of Trotskyism, arrested, interrogated, tried, and executed in quick succession. He was posthumously rehabilitated by Soviet leadership in 1956, following the death of Joseph Stalin and the De-Stalinization period under Nikita Khrushchev. Provided by Wikipedia