WASHINGTON — The CIA has fired a senior officer for leaking classified information to the media, including material for Pulitzer Prize-winning stories in The Washington Post that said the agency maintained a secret network of prisons overseas for high-ranking terrorism suspects. The termination, announced Friday, marks the latest in a series of high-profile crackdowns on spy agency and Bush administration officials accused of unauthorized disclosures of classified information. The CIA would not identify the fired officer, citing Privacy Act protections. But current and former intelligence officials identified her as Mary McCarthy, a former White House aide who until this week...