The institute of nationality has essential value for development of the state and is one of conditions for the increase of the level of unity of the nation, development of patriotism, bigger trust of people to the government, more active work of citizens for the development of the state and on the other hand for the state- on protection of citizens. In the above articles different challenges are analyzed including, but not limited to the Commonwealth of independent states and Russian Federation including legal, social, organizational and other aspects. Immigration and citizenship challenges that arose from the USSR fall are provided. Modern opinions on the methods to be used in the current situation are discussed and analyzed. Theoretical as well as practical problems are discussed. Opinions of practitioners and scientists in the field are provided. Based on the information using comparative approach some ideas and patterns and rediscussed and conclusive opinions are provided. © IDOSI Publications, 2013.