Abstract: For today's global politics the strategic partnership between Russia and China is growing important including their cooperation within international global and regional organisations. The countries most actively cooperate within The Shanghai Cooperation Organization (SCO). Despite the initial unity of these countries' opinions regarding the development of SCO, currently they face disagreements that became clear when India and Pakistan joined SCO in 2015. The aim of the present research is to describe the process of interaction between these two countries as part of The Shanghai Cooperation Organization after India and Pakistan joined it. To achieve the aim, the author of the article nalyzed the legal basis of their bilateral relations, main achievements and problems arising in the process of their interaction, uniting factors and points of disagreements between China and Russia as part of SCO, and their views on India and Pakistan joining The Organisation. The methodological basis of the research included analytical and systems approaches. Such methodology allowed a more argumented and objective analysis of the problem, in particular, what causes differences in opinions of Rusia and China as part of SCO. The author also applied the method of comparison to analyze approaches of different scientists on defining geopolitical interests of states in the region and international system in general. The author concludes that SCO activity still remains one of the most important bilateral interaction mechanism in the region and promotes development of the Central Asian Region and reduction of their security issues despite certain differences in opinions between the states. 

Abstract: The article explores Russian-Chinese cooperation on regional and international security issues within the SCO framework. The new global challenges that emerged from the profound transformations of the international system after the end of the Cold War demanded that China and Russia develop new approaches to regional security, which led to the establishment of the Shanghai Cooperation Organization that currently is an effective mechanism for coordination of positions on a wide range of international issues. And China-Russia relations of strategic cooperation remain the main driving force of the said organization. The methodological basis of this article is a system-structural method. The system method makes it possibleto study the structure of the system as a set of interrelated elements; the structural method makes it possible to identify stable connections inside the system. The merging of these two methods within the framework of exploration of the PRC and RF cooperation in the SCO allowed the author to assess the role and place they occupy within the system (organization); to study their goals and policies in the international arena; to identify a common ground that enabled them to cooperate productively in the SCO; and also to analyze interaction of the SCO with other actors of the international system. The scientific novelty of the study is determined by a comprehensive analysis of the main interests and problems of Russian-Chinese cooperation within the SCO framework. The author has studied a wide range of sources in Chinese and Russian, on their basis the author makes conclusions on trends in the development of the relations between the PRC and the RF in the context of changes in the international system.