Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
The CIA now says there are between 20,000 to 31,500 ISIS fighters operating in Iraq and Syria. CNN's Jim Sciutto reports.
CNN's Brianna Keilar speaks to Ryan Lizza and Bob Baer about the political and security implications of the CIA leak.
In a brand new book, John Rizzo, a former lawyer for the CIA, says the agency was so worried about another attack after 9/11, that they resorted to torture techniques - and out of that fear, he did nothing to stop it. CNN's Brian Todd reports.
A federal worker is sentenced to prison for telling his job he's a CIA agent, costing the government $1 million.
CNN's Jim Sciutto reports that American Bob Levinson, who has been missing in Iran since 2007, was working for the CIA.
CNN's Brian Todd looks at the background of Ryan Fogle, the man Russia has accused of being a CIA spy.
By Dugald McConnell and Brian Todd
The militant group Hezbollah claims it has blown the cover of 10 alleged CIA officers working in Lebanon.
In the latest round of an escalating spy war, Hezbollah's media arm, al Manar, posted a video Friday accusing the CIA of running espionage operations from the diplomatic cover of the U.S. Embassy in Beirut. It discloses the alleged names of the current CIA station chief (including his birthdate), the former station chief, and three other officers, as well as code names for five others.