Mrs Obama appeared via video link at the Los Angeles award ceremony, wearing a shimmering silver dress as she announced that Argo had won the Academy Award for best picture. The President's wife sometimes jokes about her right to "bare arms" and her dress left her shoulders and upper chest exposed. But a report by Fars, an Iranian news agency that acts as a semi-official mouthpiece for the regime, told a different story. Its account of the Oscars ceremony was accompanied by a crudely-altered image of Mrs Obama in a less-revealing dress. The alteration is believed to have been made...