WikiLeaks founder Julian Assange plans to plead guilty to a conspiracy charge this week as part of a plea deal with the U.S. Justice Department that will allow him to go free after having spent five years in a British prison, according to court documents. Assange was charged by criminal information — which typically signifies a plea deal — with conspiracy to obtain and disclose national defense information, the court documents say. A letter from Justice Department official Matthew McKenzie to U.S. District Judge Ramona Manglona of the Northern Mariana Islands District said that Assange would appear in court at...