The story: An exiled Iranian opposition group is in the spotlight after being challenged online by an alleged defector. Media inside Iran have extensively covered the controversy in an apparent effort to undermine the Mojahedin-e Khalq (MEK). As the group faces the prospect of being expelled from its base in Albania, Iran's ruling establishment has been pursuing a final collapse of its long-time foe.

The coverage: The official Twitter/X account of the MEK on Dec. 10 published several posts that claimed an account administrator had defected.

• The post introduced the writer as an administrator of the page, saying that “bad consequences await him" following the intervention. It also claimed that many MEK members abroad were forced to...