Yeah, the basic alliance is that anyone who wants to harm the USA nominally is ok with working together regardless of contradicting underlying ideology.
That why you'll see russia, iranian, marxist, and anarchist supporters/ideologies all using the same talking points.
Far leftists are quite open about how they think the USA is the evil empire and that Russian, China, Iran, ect are the "multipolar" world that they support.
You must be thinking of progressives who merely want free healthcare. Sure, an average bernie fan who wants some more government programs doesn't want the USA to fail. Instead, I am talking about the campists, the far lefties, or the "tankies" that they are sometimes called.
Supporting actual attacks on shipping lanes, or supporting the russian war, or attacks done by designated terrorist organizations is what I am referring to that some of the hard leftists support.
Yes, those things harm the USA, to explicitly be doing things like supporting the russian war on our allies.
> you're saying the far-right and far-left terrorist orgs will support each other?
I am saying that far left people put out support for what are arguably far right, religious extremist groups yes.
The labels of left and right get blurred, also. The people are who are right and support russia's invasion of ukraine, for example, often use very similar rhetoric to what supposedly far left people also use.
Its very similar talking points. Very similar arguments. The only main difference is that the far right will say they think jews control the world, whereas the far left will make the same exact argument about "zionists" instead.
But often time the exact argument, word for work will be the same, with only a single word replaced. Even stuff like "ZOG", which used to be vocabulary only used by neonazis is now being used by all sorts of people.
That why you'll see russia, iranian, marxist, and anarchist supporters/ideologies all using the same talking points.