A State Department contractor charged with leaking top-secret information about North Korea to Fox News entered a guilty plea Friday and agreed to serve a 13-month prison term.During an 80-minute hearing at U.S. District Court, Stephen Kim pled guilty to a single felony count of disclosing national defense information to an unauthorized person, Fox News reporter James Rosen.Kim admitted providing Rosen with the contents of a top-secret intelligence report on North Korean intentions to carry out nuclear tests. The contractor acknowledged that he and Rosen stepped out of their offices at State Department headquarters for a short meeting nearby on...