The article analyzes the causes, preconditions, geopolitical and geohistorical goals of Russia's aggression against Ukraine. The reaction of the West to the Russian geostrategy of revenge has been clarified. It has been proven that the hybrid war which has been going on since February 2014 has created a deep crisis in the global security system. The Russian Federation, having violated the norms and principles of international law, bilateral and large-scale agreements, annexed the Autonomous Republic of Crimea and Sevastopol. Russia attacked Ukraine without declaring war and again called into question the international order in Europe on February 24, 2022, when the Russian leader announced the launch of a "special military operation" against Ukraine. He called its goal the "demilitarization" of the country. The Armed Forces of the Russian Federation began shelling the cities of Ukraine and its military and civilian infrastructure. The recognition of the independence of the Donetsk and Luhansk People's Republics by Russian President Vladimir Putin preceded this madness on February 21, 2022. However, the Russian-Ukrainian confrontation has deep historical roots. The absorption of Ukraine and its human resources is one of the key tasks in the development of the project of Russian imperialism. The current process of formation and development of Putin's Russia has always been accompanied by war with Ukraine. Russia aimed to destroy our young state. The history of relations between the Ukrainian and Russian peoples is a chronicle of wars, the liberation struggles of Ukrainians, and a consistent policy of Russification and assimilation of our people.