Change in the security architecture in Europe as a result of the war in Ukraine

At the beginning of the 21st century, many analysts predicted a reset in international relations and an upcoming change in terms of dominance on the international arena, in which the US would lose its primacy to a multipolar world with China and Russia as key players. The economic crisis, the COVID-19 pandemic and currently the war in Ukraine have raised growing concern about the future of the European security system. Until Russia's invasion of Ukraine on February 24, 2022, many European Union countries functioned with the belief that Europe would never suffer from war again and that the citizens of UE would always live in a free and cohesive Europe. At present, Europe needs to adapt to the changes in the European security environment and prepare accordingly, all the more that Ukraine has become a theatre of superpowers’ competition for a new European and, consequently, global order. The aim of the article is to present the change that is taking place in the European security environment in the context of the war in Ukraine.