OK let's go one by one.
>What is happening in Ukraine now is the same as if Canada intended to join the CSTO,
First we should discuss motives why Canada would want to do something like that. This comes later in your post.
>start developing its own nuclear weapons,
Hasn't happened.
>place foreign military biological laboratories on its territory,
Hasn't happened.
>declare the United States its main enemy,
Damn, I guess in your scenario United States invaded and annexed, let's say, Maritimes after the US puppet government fucked up so bad that public uprising led to a parliament coup. Gee, I guess Canada in this scenario indeed has United States as main enemy.
>that there is nothing in common between Canadians and Americans,
Canadians already do this shtick. Especially when Americans start waving guns and bibles and babble about muh freedumbs.
>that Canada is closer to Russia or Europe than to the USA,
Fairly sure a lot of lib Canadians do argue that, how Canada is closer to Scandinavia than to USA. Or how their healthcare is clearly British unlike the USAnian shitshow.
>that Americans are not white, but have long been mixed up with Blacks, Latinos, Indians, etc.,
56%, crime rates closer to latin american shitholes, etc.
>would try to ban English in the country, leave only French, etc.
Or perhaps would insist on using British spellings of certain words? Yep that's indeed happening in Canada.
French's case is closer to Crimean within Ukraine, I guess.
>The West has turned Ukraine into a gun at Russia's temple, and Russia is now trying to neutralize it.
Everything that led to this situation has been done by – Russia. And now you're playing victim.