2008 has been a year of anniversaries linked to milestone events which
changed the course of Czech history – 1968, 1948 and 1938. In those
years, many Czechs left their country due to the deteriorating political
situation – an imminent war, a communist takeover and a Soviet-led
invasion. Our guest in this edition of One on One is Joseph Kohn, a native
of Prague, who left Czechoslovakia in 1938, and who is now a professor of
mathematics at Princeton University in the United States.