Marin completed a degree in political science at Science Po Paris and completed her doctorate at the Centre de recherches internationales (CERI) there with a dissertation on the influence of paradiplomacy in Saint Petersburg on the foreign policy of the Russian Federation in the 1990s under the supervision of Anne de Tinguy.
From 2015 to 2018, she was a Marie Curie Researcher at the Collegium Civitas university in Warsaw, associated with the European Union Institute for Security Studies in Paris.
[4] When the 2020 presidential election in Belarus led to nationwide protests over massive manipulation by the Lukashenka government, which the regime violently suppressed, the Office of the United Nations High Commissioner for Human Rights reported in September 2020 that there had been reports of over 450 documented cases of torture and ill-treatment since the day of the presidential election.
In a statement signed by Anaïs Marin and a number of UN representatives, it said that the authorities in Belarus must immediately end all human rights violations.
On September 6, two prominent Belarusian opposition figures, Maryja Kalesnikava and Maxim Znak, were sentenced to 11 and 10 years in prison[5] for "conspiracy" in a trial described by the United States as "shameful".