This thesis points out the key role of Russia in the conflicts in the post-Soviet space. The research hypothesis assumes that Russia after the collapse of the Soviet Union is trying to maintain influence in the post-Soviet space and will use force if necessary. After the collapse of the Soviet Union there is a multitude of escalation mainly because of dissatisfaction with the smaller nations that were present in the newly created countries. Through the four frozen conflicts thesis come to a result that truly Russian because of its political, strategic and economic objectives, more or less militarily intervened and used force. The conflicts in Transnistria, Georgia, Nagorno Karabakh and Ukraine have shown that Russia does not think of handing over the space of the former Soviet Union, which considers its interest area. Four mentioned conflict are result of inter-ethnic tensions and aspirations of separatist regime for their own autonomy, but what is no doubt that the key role in progress and outcome of these conflicts are played by Russia and a key role in the final resolution of the conflict will have Russia. The work is not based on criticism of Russian intervention, but proves a big role of Russia in conflicts where at times prevented much greater suffering, but also proves that Russia for their own benefit is not trying to completely stabilize the post-Soviet space.