Why Is the Government Now Investigating a Leak It Probably Knew About?

It's the story of the most sophisticated state-sponsored cyber attack in history and now the FBI wants to know how it leaked. The trouble is: It appears the Obama administration permitted the leak in the first place. This afternoon,  The Wall Street Journal  reported  that the FBI is investigating into who leaked information to  The New York Times's  David Sanger for his story confirming the U.S