What is the main conflict in The Prague Orgy by Philip Roth?

In The Prague Orgy by Philip Roth, protagonist and narrator Nathan Zuckerman is a Jewish American novelist who travels to Prague, Czechoslovakia in early February 1976 to obtain the unpublished manuscript of a Yiddish writer. Zuckerman meets eccentric Czech writers who obsess over sex and the authorities spying on them. While in Prague, Zuckerman explores the meaning of literature and Judaism.