MILAN, Italy (AP) - Hip-hop soul star Mary J. Blige canceled a concert in Milan scheduled for next Tuesday out of fears of a terrorist attack, citing a U.S. State Department warning last month that Americans could be targeted here, her promoter said.The State Department issued a warning of ``possible threats'' to U.S. citizens in the cities of Milan, Venice, Florence and Verona on Easter Sunday, March 31. Officials have refused to give details about the threats.Concert promoter Clear Channel Entertainment said Wednesday that the warning led Blige to cancel the show.``Following the American government statement to its citizens regarding...