Ukraine and Poland should strive for a breakthrough on contentious historical issues. Attempts to resolve them through “blackmail” will not yield positive results, according to Polish President Andrzej Duda. Duda said that during his visit to New York for the 79th session of the United Nations General Assembly, he had a brief meeting with Ukrainian President Volodymyr Zelenskyy. During this encounter, the two leaders exchanged a few words, and discussed the situation at the front, but did not touch on the topic of the Volyn Tragedy. At the same time, he pointed out that these problematic histo…