Chrystia Freeland studied in the USSR
During 1988–89, she was an exchange student at the University of Kyiv in Ukraine, where she studied Ukrainian, although she was already fluent in the language..
While there she attracted the attention of the KGB, which tagged her with the code name “Frida”, and Soviet newspapers, who attacked her as a foreigner meddling in their internal affairs over her contacts with Ukrainian activists.
On her return from a trip to London in March 1989, Freeland was denied re-entry to the USSR
https://en.wikipedia.org/wiki/Chrystia_Freeland