Depending on the specifics of a country's needs, capabilities, potential threats, as well as national security and defense policies, the security-intelligence system can be organized in different ways. In the context of contemporary political processes, security risks and threats that countries face, special emphasis is placed on prevention, which makes the existence of effective and qualified intelligence services indisputable. Starting from the development and progress of the reform of the security-intelligence system of the Republic of Serbia, analysis of the current organizational structure of the system, considering the comparative practices of other countries, but taking into account the needs and capabilities of our country, the paper points out to the inadequacy of the existing "model" and the need for adequate institutionalization and improvement of the intelligence capacities. The abolition of the Research and Documentation Service (RDS) and the imposition such a role to the Military Intelligence Agency (MIA), have conditioned that the focus of the paper is on indicating the necessity of constituting a national intelligence service, which, in addition to the MIA, would constitute an intelligence system, that is a subsystem of the security-intelligence system. In this way, the basics of the national security system would be strengthened by the existence of a credible and qualified intelligence service, which would play a key role in foreign policy decision-making and risk reduction to national interests, by monitoring and analyzing past and current events and assessing similar processes in the future.