미하일 고르바초프
Definition of Gorbachev | Dictionary.com
http://dictionary.reference.com/browse/gorbachevAttention Required! | Cloudflare
https://en.oxforddictionaries.com/definition/us/gorbachev,_mikhailDefinition of Gorbachev | Dictionary.com
http://dictionary.reference.com/browse/gorbachevGORBACHEV, MIKHAIL English Definition and Meaning | Lexico.com
https://en.oxforddictionaries.com/definition/us/gorbachev,_mikhail