"The social and political order in some particular countries did change in the past, and it can change in the future as well. But this is exclusively a matter for the peoples themselves and of their choice. Any interference in internal affairs, any attempts to limit the sovereignty of states — whether of friends and allies or anybody else — are inadmissible."
January 1, 1970
https://en.wikiquote.org/wiki/Mikhail_Gorbachev