The US agencies involvement in such events is a mundane obvious fact at this point. It would be a conspiracy theory for there NOT to be any involvement by the US in such a critical sequence of events against one of their major adversaries. That is a very naive perspective.
Yes we all know about the USSR and its vast expansion post WW2. The USSR no longer exists. Russia is involved in regime change in Ukraine right now, today. But it's obviously not a covert operation.
https://www.cato.org/commentary/americas-ukraine-hypocrisy
https://en.wikipedia.org/wiki/United_States_involvement_in_r...
Today there is a proxy war between the US and Russia in Ukraine. $100B of US military backing so far, and it's not over yet.