The mayors of the capitals of the Visegrad Four or V4 countries Czech Republic, Hungary, Poland and Slovakia, from left, Zdenek Hrib of Prague, Gergely Karacsony of Budapest, Matus Vallo of Bratislava, and Rafal Trzaskowski of Warsaw pose after they signed the Pact of Free Cities as they announce the establishment of the Alliance of Free Cities of Europe during their meeting in the aditorium of the Central European University in Budapest, Hungary, Monday, Dec. 16, 2019. (Szilard Koszticsak/MTI via AP)
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