https://www.cnet.com/news/facebook-removes-russian-iranian-accounts-for-coordinated-inauthentic-behavior/

Most of the coordinated inauthentic behavior -- which is how Facebook describes misinformation campaigns designed to widen political divides -- came from the 513 accounts tied to Iran.

These operated in multiple countries and pretended to be local people, media groups and political organizations. They posted stories on current events, mostly sourced from Iranian state media and focused on political tensions. Facebook previously took down accounts linked to Iran back in January and last August.