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The fatal crash that claimed the life of Polish President Lech Kaczyński occurred at the Smolensk North Airport on April 10, 2010, near Smolensk, Russia. The Tupolev Tu-154 aircraft carrying Kaczyński and 95 others, mostly senior Polish officials and military leaders, crashed in heavy fog while attempting to land at the airport. The crash remains a subject of intense scrutiny, with ongoing debates and conspiracy theories surrounding its circumstances.