After Warsaw Pact tanks rolled into Czechoslovakia on the night of August 20, 1968 to crush the Prague Spring movement, many Czechs and Slovaks found refuge in Switzerland. Irena Brežná was in France at an international student camp, “laughing and happy to be able to travel and visit a capitalist country”. Political liberalisation brought about after the election of Alexander Dubček to head the Communist Party of Czechoslovakia in January 1968 meant that “people could again read newspapers and discuss openly”, she explains. But after half a million troops from Soviet-controlled states invaded the country to suppress reforms, killing 137 civilians, the 18-year-old Slovak’s mother called to say that she should not return home and that both parents, like many others, would emigrate. “It was the greatest shock in my life. We felt betrayed by the system. I couldn’t go back. If I returned, I would be unable to study, as I would be seen as the daughter of the state’s enemies”. ...