János Kádár (born May 26, 1912, Fiume, Hung. [now Rijeka, Croatia]—died July 6, 1989, Budapest) was the premier of Hungary (1956–58, 1961–65) and first secretary (1956–88) of Hungary’s Communist Party who played a key role in Hungary’s transition from the 1956 anti-Soviet government of Imre Nagy to the pro-Soviet regime that followed. Kádár managed to convince the Soviet Union to withdraw its troops and allow Hungary a modicum of internal independence after quelling a popular revolt in his country.

Trained as a skilled mechanic, Kádár became a member of the then-illegal Communist Party in 1931 and was arrested several times in the following 12 years. He was admitted to the Central Committee of the party in 1942 and to the Politburo in 1945. After the war he became minister of the interior (1949), but in 1950 he came into conflict with the Stalinists and consequently was expelled from the party, jailed (1951–53), and allegedly tortured.

Rehabilitated in 1954, Kádár joined Imre Nagy’s short-lived government. Nagy, who pledged the liberalization of the Communist regime and the evacuation of Soviet troops from Hungary, had been brought to power on the strength of the Hungarian revolt (started Oct. 23, 1956). After Soviet troops took over the country on November 4, Kádár deserted Nagy and formed a new government under Soviet auspices, serving as premier until 1958. Unable to implement Nagy’s reforms, Kádár resorted to repressive measures to curb the revolt. He served another term as premier from 1961 to 1965.

In foreign policy Kádár as party leader steered a course close to Moscow’s, while trying to raise the Hungarians’ standard of living and maintain more liberal internal policies. In contrast to such Stalinist predecessors as Mátyás Rákosi, Kádár minimized political surveillance in Hungary and eventually permitted limited freedoms of expression. Hungary’s cultural life benefited from the greater political tolerance experienced under Kádár’s pragmatic rule. To achieve faster economic growth, Kádár’s government in the late 1960s adopted a new system of decentralized economic management in which plant managers and farmers were given greater freedom to make basic decisions in the operation and development of their enterprises. The profit motive was thus partially introduced into many sectors of the state-run economy, with the result that Hungary became the most prosperous nation in eastern Europe.

Kádár’s government slowed and eventually stopped the pace of reform in the mid-1970s, and by the 1980s Hungary’s economy had entered a state of stagnation. Consequently, Kádár was removed from his post as general secretary of the Hungarian Communist Party in 1988 and was given the largely ceremonial post of party president until May 1989, when he was removed from the party presidency and from the Central Committee.