> That's a very naive take.
No, it's factual.
> They weren't russian colonies but they were within its sphere of influence
A “sphere of influence” is a collection of peripheries of metropolitan state, a geographically compact set of colonies. Your explanation is self-contradictory.
> Just like cuba, canada and the entire western hemisphere is within our sphere of influence.
They... aren't. Yes, the US asserted something like that with the Monroe Doctrine in the 19th C, but it's not at all the case now. The US has many allies in the Western Hemisphere, some of who might reasonably be viewed as client states, but it definitely doesn't include Cuba or the whole hemisphere.
> Do you know what would have lead to an invasion of canada? Canada's request to join the soviet union.
Whataboutism is silliest when it has to rely on speculative assumptions about ridiculous counterfactuals.
> The only shame is that we don't get to feel the pain of our actions
If you really feel it is a shame that you don't get to feel the pain of the crisis in Ukraine, that's...easily fixable.
