I doubt any major power will intervene for Iran unless it looks like a regime change that actually benefits Israel / the USA happens. China and Russia have basically been minimal allies with Iran for the sake of funding an enemy of America, but they’ve always wanted Iran to remain weaker.
The small pro Iran groups, largely the groups Iran trained will act, but they have been already for the past 3 years.
Ledericas@lemm.ee 3 days ago
russia, china giving it arms, since they are trade with each other quite often, maybe some of the other central asian countries.