https://www.bleepingcomputer.com/news/technology/twitter-removes-state-backed-actors-conducting-information-campaigns/

Twitter has removed another batch of state-sponsored actors performing information campaigns on Twitter.  The detected operations announced today involved Qatar, Iran, Yemen, Ecuador, Saudi Arabia, Spain, China, and Hong Kong.

Starting in October 2018, Twitter began disclosing state-backed information operations detected on their service and that were subsequently removed.