A Washington Post columnist has sharply criticized CNN for failing to retract its claim that British ex-spy Christopher Steele's dossier is 'corroborated,' following a federal indictment that raised serious questions about the document. Media critic Erik Wemple issued the harsh rebuke in a column on Friday, calling on CNN to correct its longstanding claim that its reporting had verified substantial portions of the 2016 dossier alleging Donald Trump conspired with Russia. Last week, a federal indictment alleged that Russian-born analyst Igor Danchenko, a key source for the Steele dossier, fabricated conversations with one source, and used a Democratic political operative...