You can consider me very liberal but not more liberal than many Canadians. More liberal than American standards for sure. Perhaps more aware of the facts you speak of than most Canadians.
I see America's war in Ukraine as America using Ukrainians as proxy fighters for the cause against Russia to which you allude, and I see it as a breaking point for either the American agenda or the Russian agenda of maintaining security.
We actually disagree on nothing.
It's much more than twenty years. The Vietnam war was an early blueprint on America's intentions.
Was that history all for the sake of America's security? Yes, in the sense of economic security, but not for any other security reasons, simply because America has been too powerful militarily ever since it procured nuclear weapons in 1945.