Intelligence Aspects of Quadrilateral Security Dialogue to restraint Economic Expansion of China in the Indo-Pacific

In 2007, a quadrilateral security dialogue format was established, in which 4 states with democratic values ​​are united: USA, Japan, Australia and India.The scientific article describes the goals of the union of the states participating in the dialogue and the points of intersection of their interests. The role of China as a common opponent state is highlighted. The nature of states and their areas of coordinated activity are discussed.The mentioned events are emphatically presented in terms of agency-operational and intelligence-counter-intelligence activities, which are highlighted both with theoretical material and based on open sources, obtained and analyzed information.