The science article is dedicated to the actual problem reinforcement and reformation the system of information security in counties that relate to the North Atlantic Treaty Organization. The main threatens to country's information security has been defined, the analytical grouping of problems by level of complexity and prognostication calamity have been made. The process algorithm for ensuring eternal operation of the information security system under the pressure of information threaten was elaborated. The critical components of NATO information infrastructure was well-defined.

The purpose of the article is to study the current problems of investment processes in the conditions of transformation of the Ukrainian economy. The relevance of the research was due to significant changes in political, economic and social processes of Ukraine. The research was conducted using general scientific and special methods and methods of research, such as theoretical analysis and synthesis, methods of grouping, modeling, comparison, as well as methods of systematization and scientific synthesis, in particular on materials: Ministry of Economic Development and Trade of Ukraine, research conducted by the Doing Business Group of the World Bank, rating of Moody’s Investors Service, rating of Global Competitiveness Index 2017/2018 and of European Business Association. The most actual factors of influence of political, economic, criminal and legislative processes on investment potential of Ukraine were analyzed. It was defined that the economic of Ukraine is characterized by the deficiency of capital, progressive technologies, mutual integration of scientific and industrial spheres, developed management and high-tech production and the recommendations to create favorable conditions for investment were made. Positive changes were noted in creating a legal framework for the promotion, protection of investments and intensification of investment activity in Ukraine.

Relevance of the article - security has always been one of the priority issues of state policy, and considering the fact that the defense forces are an inseparable part of state security, the study of their information security is essential. The feasibility of this study is confirmed by the fact that in the current conditions of development of the information society, the information technology of the Ukrainian defence forces must adapt to the current challenges and threats, to ensure proper protection of information of strategic importance to the state and collected, consolidated and stored by the defence forces. The purpose of this article is to identify problems of information security of defence forces in Ukraine, to find ways of their elimination. Formal logical, systemic structural, comparative and legal methods were used to conduct the research. It is stated that by dividing the information space and cyber space, the legislator has laid down legal regulation of protection of the information space of the state. It is understood that the Lithuanian and Latvian forces for combating threats to the information space were consolidated within the structure of the Ministry of Defence.

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The purpose of the article is to investigate the specifics of the object and subject of staffing of the National Police of Ukraine at the regional level based on scientific points of view and regulatory legal acts. Writing the article, the following methods were used: dialectical, logical-semantic, and logical-legal methods. The relevance of the article is in the need to study the essence of the object and subject of staffing of the National Police at the regional level. The subject of the study is the legislation of Ukraine regarding the requirements for a police officer as an object of the police staffing, including at the regional level. The features of object and subject of the police staffing at the regional level are identified in the paper, as well as the restrictions that are currently placed upon the police officer on recruitment. The guarantees, determined by the law and which the police officer can use during the performance of official duties, are analyzed. The legislative requirements for candidates for senior posts are examined. The powers of the head of the territorial police authority are administrative and regulatory in nature, as evidenced by their rights and obligations. The authors concluded that the service in the National Police at the regional level is specific, requires professionalism and compliance with the law, which underlines the urgent need to strengthen staffing in this area. In addition, the author’s opinion of the concepts of the object and subject of staffing of the National Police of Ukraine at the regional level is provided due to the results of the study.