In January 2022, Kazakhstan was faced with an attempt of a violent change of power in the form of mass protests that spread throughout the country and were organized with the basic techniques of color revolutions. The country’s own law enforcement forces were not able to cope with radical citizens, looters-rioters, and terrorists, and in these circumstances the head of state, K.K. Tokayev, decided to request the support of the Collective Security Treaty Organization (CSTO) allies, who immediately sent the united peacekeeping troops to the republic. The CSTO peacekeeping mission, coordinated by Russia, successfully restored constitutional order in the country and prevented a violent coup d’état. The purpose of this research is to analyze the course of the January events and actions of the CSTO, as well as their impact on Kazakhstan, the region and the organization itself. The paper is based on interviews with experts from the CSTO member states, studies carried out in this area of research, and statements by official authorities. The synthesis of the research results is divided into thematic blocks and supplemented by the author’s conclusions. The paper mentions aspects such as the transition of power, changes in Kazakhstan’s domestic and foreign policies, the effectiveness of the CSTO organization and the expansion of its potential use. Proposals are also provided regarding the strengthening of defense integration and the need to develop a common regional identity. The research is unique in that it brings expert opinions from six CSTO member states, the results of studies carried out by researchers from Russia, Kazakhstan, and abroad, and the theoretical terminology of Western political ideology. The author presents the area of responsibility of the CSTO as a Eurasian security community based not only on collective security, but also on economic interdependence and a sense of community among the nations of its member states.