Finland's Prime Minister Sanna Marin speaks with the media as she arrives for an EU summit at the European Council building in Brussels, Monday, May 24, 2021. European Union leaders are expected, during a two day in-person meeting, to focus on foreign relations, including Russia and the UK. (Olivier Hoslet, Pool via AP)

Municipal elections campaign posters of various different parties spread along a footpath in Turku, Finland, on June 8, 2021. Finland holds local elections upcoming Sunday June 13, 2021, in a first litmus test for the popular young Social Democratic prime minister, Sanna Marin, who took office a mere 18 months ago. (Vesa Moilanen/Lehtikuva via AP)

Finland's Prime Minister Sanna Marin speaks with the media as she arrives for an EU summit at the European Council building in Brussels, Monday, May 24, 2021. European Union leaders are expected, during a two day in-person meeting, to focus on foreign relations, including Russia and the UK. (Olivier Hoslet, Pool via AP)

Municipal election campaign posters of various different parties on a street in Espoo, Finland, on Thursday May 25, 2021. Finland holds local elections upcoming Sunday June 13, 2021, in a first litmus test for the popular young Social Democratic prime minister, Sanna Marin, who took office a mere 18 months ago shortly before the outbreak of COVID-19 and whose party is behind in polls across the Nordic country. (Heikki Saukkomaa/Lehtikuva via AP)

Campaign posters of the municipal elections on the roadside in Espoo, Finland, on May 25, 2021. Finland holds local elections upcoming Sunday June 13, 2021, in a first litmus test for the popular young Social Democratic prime minister, Sanna Marin, who took office a mere 18 months ago. (Heikki Saukkomaa/Lehtikuva via AP)