Polak, Michał, and Krzysztof Kaczmarek. “Security and Historical Politics: Analysis of the Operations of the Russian Federation in the 21st Century”. Roczniki Nauk Społecznych 53, no. 2 (April 24, 2025): 137–148. Accessed October 31, 2025. https://czasopisma.tnkul.pl/index.php/rns/article/view/1639.