 Complete the following phrase:  Efforts to achieve a united Soviet people were severely damaged by the severe economic problems in the Soviet Union in the 1970s and 1980s resulting in a wave of anti-Soviet sentiment among non-Russians and Russians alike. Mikhail Gorbachev presented himself as a Soviet patriot dedicated to resolving the countrys economic and political problems, but he was unable to restrain the rising regional and sectarian ethnic nationalism, with the USSR 