Why Was New York Times Editor Fired?

Why was Jill Abramson fired from the New York Times? 

     It is simple. "The Obama years are a benchmark for a new level of secrecy and control. It's created quite a challenging atmosphere for The New York Times, and for some of the best reporters in my newsroom who cover national security issues in Washington," Jill Abramson, the editor of the New York Times told an NPR host.

     "Collectively, they have really, I think, put a chill on reporting about national security issues in Washington." Abramson added: "Sources who want to come forward with important stories that they feel the public needs to know are just scared to death that they're going to be prosecuted. Reporters fear that they will find themselves subpoenaed in this atmosphere."