I would like to thank the ministers of culture of Poland and Ukraine for their good cooperation. We are waiting for further decisions," Tusk wrote in a post on X.The Volyn massacre, which took place during World War II, involved widespread violence that claimed tens of thousands of Polish and Ukrainian lives.Poland characterizes the events as genocide perpetrated by the Ukrainian Insurgent Army (UPA), while Ukraine has called for shared acknowledgment of responsibility for the atrocities.The decision followed a Jan. 9 meeting in Poland between Ukrainian National Unity Minister Oleksii Chernyshov and Polish Culture Minister Anna Wroblewska.The discussions emphasized the role of culture in preserving national identity and fostering socio-economic development, the Polish Culture Ministry noted.President Volodymyr Zelensky and Prime Minister Tusk previously met in Lviv on Dec.