The article deals with bilateral Russia and Ukraine power relations, urgent questions of their cooperation and form of realization of large Russia foreign economic projects. The separation of bilateral Ukrainian-Russian relations in the energy sector is quite conditional, the authors have studied. Because they are objectively inscribed in the relations of both countries with a third party – first of all, European countries as consumers of energy resources transported through the territory of Ukraine. Thus, both from the point of view of the technological chain (producer-transit-consumer) and from the economic point of view (seller-provider of transportation services-buyer), these relations should be considered in a tripartite format. It tries to determine possible threats of Ukraine’s national security in the context of Russia foreign power strategy realization. Ukrainian-Russian relations in the energy sector are quite dynamic, but cannot be assessed unambiguously due to the presence of a combination of positive and negative factors and trends. They largely depend on the general state of relations between the two capitals, and sometimes have a decisive influence on them. It has been investigated that the weaknesses of the Ukrainian energy sector since independence in 1991 shed light on the fundamental link between energy security and national security. From the point of view of global energy processes, one should take into account the favorable geopolitical and geographical position of Ukraine and its related role as a transit state. The integration of the Ukrainian energy system into the European one is a component of Ukraine’s strategic goal of joining the EU. Ukraine has a sufficiently strong and developed gas, oil and electricity networks, connected to the transport networks of the EU and CIS countries: Russia, Moldova, Belarus, Poland, Slovakia, Hungary, Romania, which allows it to participate in the formation of European energy policy and common energy market, play an important role in energy cooperation between the CIS and the EU.

The article has focused on the European Green Deal [EGD], its goals, key tasks and components. Particular attention has been paid to the specifics of the implementation of the EGD in the partner countries of the Eastern Partnership [EaP]. The author’s approach to singling out clusters of the EaP countries on the integration of their green policies, taking into account the level of convergence of the EaP countries environmental and climate policies and the peculiarities of the implementation of the EGD, has been presented. The potential of the countries of the region in terms of readiness to switch to green energy has been identified on the basis of the Energy Transition Index and the dynamics of the EaP Environmental and Climate Policy Sub-Index. The degree of correlation between the general degree of convergence of the EaP countries to the European Union and the degree of convergence of the EaP countries environmental and climate policies to the EGD has been determined. The ways of transformation of the strategy of formation and implementation of the EGD for the Eastern Partnership countries, taking into account the current challenges, have been outlined. Thorough conclusions and recommendations for the EaP countries in the context of EGD implementation have been presented.

Луцишин Г.І., доктор політичних наук, професор, завідувач кафедри політології та міжнародних відносин Національного університету «Львівська політехніка» Лукач Н.М., кандидат політичних наук, асистент кафедри політології та міжнародних відносин Національного університету «Львівська політехніка»

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The article is devoted to the study of the influence of the nuclear factor on the priority directions, the process of formation and ways of realization of the foreign policy course of Ukraine. The authors investigated the theoretical and methodological principles of the influence of the nuclear factor on the foreign policy of Ukraine. Comparison of various scientific approaches and sources of information allows to generalize and systematize the views of scientists on the problem being studied. The foreign policy of Ukraine in foreign and domestic historical and political thought of the studied period was analyzed. The concepts and approaches to the study of the nuclear factor were singled out. The preconditions of the decision on Ukraine's nuclear disarmament were highlighted. The authors identified the impact of the nuclear factor on Ukraine's foreign policy and emphasized the importance of further research on the topic, given the current problems of implementation and realization of foreign policy of Ukraine.