Intellectual biography of Zbigniew Brzezinski: the author’s experience of the historical source base development and historical sources analysis: DOI: https://doi.org/10.17721/1728-2640.2026.162.8. (2026). Bulletin of Taras Shevchenko National University of Kyiv. History, 162(1-2). https://history.bulletin.knu.ua/en/article/view/10302