After the Crimean Peninsula was invaded and the amplification of conflicts in South-Eastern Ukraine, it has become obvious that Russia's policy is concentrated on preserving its influence and strategic control over the decisions and political directions taken by the States from the former Soviet bloc. To understand the consequences of the Russian-Ukrainian war on the West, as well as to anticipate and counteract a possible future evolution of similar events not only in geopolitical risk states

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... uch as Moldavia, but also even in NATO members such as the Baltic countries, Romania or Bulgaria, it is worth paying attention to the geopolitical consequences of the loss of Crimea and the South-Eastern provinces by Ukraine. The article analyses the reason, mechanisms and stakes behind the Russian-Ukrainian war, from both a geopolitical and historical perspective. To understand the way in which different hybrid instruments can be used by the Russian Federation to influence the States in its proximity and, in particular, how their combination leads to effective satisfaction of the aims, it is useful to assess and address the systemic risks and vulnerabilities of States in the concerned areas of Russia and the West in recent years. Keywords: Ukraine; Russian Federation; Crimea; Russian-Ukrainian war; hybrid warfare; limited warfare; maskirovka.