https://www.cnbc.com/2018/10/17/twitter-found-10-million-posts-by-iran-russia-backed-accounts.html

Twitter said Wednesday it found more than 10 million posts by Iran and Russia-backed accounts dating back to 2009 — and it plans to release archives of the posts to the general public.

Twitter had previously identified Iran and Russia as the source of fake accounts and coordinated misinformation campaigns, but had largely limited the scope to around the 2016 U.S. presidential election and the upcoming midterm elections.