Tucker Carlson recently asked former US president Trump if he thought the country was headed for civil war. Mr. Trump said he didn't know.
I think (a) "civil war" is an oxymoron and (b) that old fashioned idea of "entirely localized to within a nation" no longer obtains in a world with no insulation twixt nations. Even the US civil war had its external trackers and backers. The revolutionary war was civil, until it was won. As is so often the case, the very point of contention is whether we're talking two nations or one.
Take the case of Ukraine: when was it ever a "civil war" in the sense of "not also a proxy war"? Never. External interests were weighing in on both sides, upping the ante. Plus as I said "civil war" is an oxymoron. War is the very opposite of civil.
However, we now have the notion of "culture wars", a kind of psywar that has the ability, at least on paper, to stay a war of words and memes, forms of name-calling. As to the question of whether the US is headed for a culture war, that's a no brainer: the US is a motherboard for culture wars, and computing through them. That's what a "melting pot nation" (not all of them are) is all about.