> Lem was born in 1921 in Lwów, interwar Poland (now Lviv, Ukraine)
> In 1945, Lwow was annexed into the Soviet Ukraine, and the family, along with many other Polish citizens, was resettled to Kraków, where Lem, at his father's insistence, took up medical studies at the Jagiellonian University.
> After the war, under the Polish People's Republic (officially declared in 1952), the intellectual and academic community of Kraków came under complete political control. The universities were soon deprived of printing rights and autonomy.[79] The Stalinist government of Poland ordered the construction of the country's largest steel mill in the newly-created suburb of Nowa Huta.[80] The creation of the giant Lenin Steelworks (now Sendzimir Steelworks owned by Mittal) sealed Kraków's transformation from a university city into an industrial centre.
It's a stretch, but not by much, to consider Lem as someone who spent time under the Soviet umbrella.