A former Georgian prime minister (same that got Georgia into an armed conflict with Russia and who came into power in Georgia by a flower revolution) became head of Odessian Oblast with US support some time after 2014.
Various paramilitary groups were funded / backed by Russia / US / other people. Among them obviously the “peoples republics”.
Years of investment in “pro”-democracy NGOs many of which are known to be affiliated with the State Department and intelligence fronts, to the point that many maidan protesters / organizers were essentially paid to be there.
The Crimean referendum happened under Russian influence obviously.
The whole Nordstream 1/2 project came into existence because Ukraine was annoying to deal with and some German politicians were more than a bit too friendly and open to Russian suggestions.
In turn there was a lot of planning by the US happening to slow down Nordstream 2.
There are a lot more examples like that. Ukraine is an excellent case study how large blocks / nations follow through on their foreign policy goals over decades.