There is literally zero evidence of that, except claims by the Russian propaganda itself.
People who live in totalitarian countries (like Russia, where ruler is in a power for a lifetime), seems to not understand that democracies don't do promises, because leaders changes frequently, and any promise without written agreement is just plain impossible except very short term.
So you are using an instance of internal russian lie and propaganda to "hate US imperialism and propaganda", and don't see it yourself.