Abstract: The promotion of language is considered to be the one of the ways to increase the state\'s soft power. Taking this into account, Soviet leaders used the Russian language as a tool to create a new identity to consolidate the Soviet republics. After the collapse of the Union of Soviet Socialist Republics (USSR) in 1991, the majority of the countries started the de-russification process which was a part of their own nation-building process. However, in the case of Central Asia, the variation of language policies is observed: some of the states, such as Kazakhstan and Kyrgyzstan, still use Russian as the official language, while other countries, such as Uzbekistan, adopted strong anti-Russian language reforms. This thesis presents the analysis of the cultural and material factors which may influence the status of the Russian language by testing a hypothesis deduced from the Rational Choice Theory. After examining the data by means of Mill\'s methods of agreement and difference, the research concludes that the preservation of the Russian language and its use depends mostly on the number of Russian nationals and Orthodox adepts living in the country of the region under analysis.
Keywords: Russian Language,Language Policies,Derussification,Russification, Central Asia