The X social media platform on Tuesday restored the account of Yulia Navalnaya, the widow of Russian opposition leader Alexei Navalny, after a brief suspension. X, formerly Twitter, said the site's defense mechanism against manipulation and spam had "mistakenly flagged" Navalnaya's account as violating its rules. "We unsuspended the account as soon as we became aware of the error, and will be updating the defense," X Safety said in a post on Tuesday. Navalny's Anti-Corruption Foundation had earlier tagged Elon Musk in a post to ask "exactly which rules were violated" by Navalnaya. Accounts of Navalny's allies,