The FBI is investigating the leak of a pair of highly classified intelligence documents describing Israel's preparations for a retaliatory strike on Iran, the Washington Post reported on Tuesday. "The FBI is investigating the alleged leak of classified documents and working closely with our partners in the Department of Defense and Intelligence Community,

The FBI has opened a federal investigation over the leak of top secret U.S. intelligence documents regarding Israel's preparation for an attack against Iran. Why it matters: The leak was one of the most serious security breaches within the U.S. intelligence community in years.