"the counter-revolution in Hungary"

The Hungarian Revolution (counter-revolution from the communist-bloc perspective) lasted from 23 October to 10 November 1956.  It was a spontaneous revolt against Moscow rule and was ruthlessly suppressed by armed Soviet intervention.  An estimated 2,500 Hungarians and 700 Soviet troops died. More than 200,000 Hungarians fled the country before the border with Austria was reinforced. Imre Nagy, the Hungarian Prime Minister, was executed.