The Polish settlement emboldened the Hungarians, who decided that Moscow could be defied. A mass demonstration in Budapest on 23 October turned into a popular uprising. In response to the uprising, Hungarian Party leaders installed reformist Premier Imre Nagy. Soviet forces in the city clashed with Hungarians and fired on demonstrators, with hundreds of both Hungarians and Soviets killed. Nagy called for a cease-fire and a withdrawal of Soviet troops, which a Khrushchev-led majority in the Presidium decided to obey, choosing to give the new Hungarian government a chance. Khrushchev assumed that if Moscow announced liberalization in how it dealt with its allies, Nagy would adhere to the alliance with the Soviet Union.