Earlier quoted context omitted.
I'm not sure in what sense your answer is a constructive contribution. There is a long history of engineering 'grassroots movements' toward overthrowing governments. All powers have been engaging in this practise, and you can find how-to manuals -- I recommend reading some, it's highly enlightening. For example many of the de-colonialisation movements in the second part of the 20th century were actively run by the So…
And even before that. A few examples: - Lenin famously had to ride a train through half of Europe to get back into Russia and stir up trouble. The involved countries knew very well who he was and what he was going to do (he was under surveillance, like most activists before and since), but they let him pass in order to help destabilise a neighbouring power. - Italian unification was aided by the British, which contro…
There's a pretty high jump from "Hitler helped the rebels during the war" to "the Civil War was orchestrated and triggered by foreign powers".