Popular uprising in a nation in 1956, following a speech by Soviet leader Nikita Khrushchev in which he attacked the period of Joseph Stalin’s rule. Encouraged by the new freedom of debate and criticism, a rising tide of unrest and discontent broke out into active fighting in October 1956. Rebels won the first phase of the revolution, and Imre Nagy became premier, agreeing to establish a multiparty system. On November 1, 1956, he declared neutrality and appealed to the United Nations for support, but Western powers were reluctant to risk a global confrontation. On November 4 the Soviet Union invaded to stop the revolution, and Nagy was executed for treason in 1958. Thousands were killed and wounded and nearly a quarter-million citizens fled the country. Nevertheless, Stalinist-type domination and exploitation did not return, and the nation thereafter experienced a slow evolution toward some internal autonomy.