A historical dispute over the legacy of the WWII-era Ukrainian Insurgent Army (UPA) has resurfaced in Polish-Ukrainian relations, with analysts noting that the subject is slowly reshaping the upcoming 2027 elections in Poland.UPA is a WWII-era Ukrainian nationalist force viewed in Poland as responsible for massacres of tens of thousands of Poles in Volhynia and Eastern Galicia, while many Ukrainians regard it as a symbol of anti-Soviet resistance.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official.What’s the UPA dispute about?The latest dispute began after President Volodymyr Zelensky named a Ukrainian military unit after the “Heroes of UPA,” triggering criticism from Poland.In response, Polish President Karol Nawrocki revoked the highest honor, the Order of the White Eagle, previously awarded to Zelensky, provoking further criticism.“No one else will ever dictate to Ukrainians which heroes to honor, which holidays to celebrate, or which history to study,” Kyrylo Budanov, the head of Zelensky’s office, said earlier; Budanov previously served as chief of Ukraine’s military intelligence (HUR).For the pro-EU government of Prime Minister Donald Tusk, the growing historical dispute with Ukraine risks straining one of the war’s most important alliances.Tusk has urged both sides to cool tensions, calling the escalating rhetoric a “strategic mistake.”From WWII disputes to modern political clashesAccording to Politico‘s report on Tuesday, the issue is becoming increasingly entangled in Polish domestic politics as the 2027 election approaches.