This book discusses the multiple implications of the war against Ukraine for the EU political system. It draws on a number of different authors to analyse the main dimensions of the Russian attack on Ukraine and the subsequent large-scale war, which impact the global order and EU foreign policy. In the context of war and Russia’s large-scale invasion of Ukraine, the EU needs to position itself in a changing world order, internal and external challenges to liberal democracy and the development of its strategic autonomy. In various chapters of the book, the development and strengthening of strategic partnership and friendship with Ukraine is considered by the EU as one of the central foreign policy priorities. Without the support of the Ukrainian partner, it is difficult for the EU to achieve positive results in European politics and play the role of an influential power in the international arena. In this context, various authors note that only the formation of political and economic ties between the EU and Ukraine will be the optimal way out of the full-scale war and crisis that Ukraine has found itself in. Only the combination of opportunities and efforts will allow the Ukrainian political elite and society to eventually stand on par with leading European countries.